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{{short description|Electronic musical instrument}}
{{otheruses}}
{{about|the musical instrument}}
<!-- Image with unknown copyright status removed: [[Image:YamahaDX7.jpg|thumbnail|right|300px|A classic FM synthesizer, the [[Yamaha DX7]].]] -->
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[[File:R.A.Moog minimoog 2.jpg|thumb|Early [[Minimoog]] by R.A. Moog Inc. ({{Circa|1970}})]]
A '''synthesizer''' (or '''synthesiser''') is an [[electronic musical instrument]] designed to produce electronically generated sound, using techniques such as [[additive synthesis|additive]], [[subtractive synthesis|subtractive]], [[FM synthesis|FM]], [[physical modelling synthesis|physical modelling]] [[synthesis]], or [[phase modulation|phase distortion]].


A '''synthesizer''' (also '''synthesiser''',<ref name=PEsynth /> or simply '''synth''') is an [[electronic musical instrument]] that generates [[audio signal]]s. Synthesizers typically create sounds by generating [[waveform]]s through methods including [[subtractive synthesis]], [[additive synthesis]] and [[frequency modulation synthesis]]. These sounds may be altered by components such as [[Audio filter|filters]], which cut or boost [[Audio frequency|frequencies]]; [[Envelope (music)|envelopes]], which control [[Articulation (music)|articulation]], or how notes begin and end; and [[low-frequency oscillator]]s, which modulate parameters such as pitch, volume, or filter characteristics affecting [[timbre]]. Synthesizers are typically played with [[Musical keyboard|keyboards]] or controlled by [[Music sequencer|sequencers]], software or other instruments, and may be synchronized to other equipment via [[MIDI]].
Synthesizers create sounds through direct manipulation of electrical voltages (as in [[analog synthesizers]]), mathematical manipulation of [[discrete]] values using computers (as in [[software synthesizer]]s), or by a combination of both methods. In the final stage of the synthesizer, electrical voltages generated by the synthesizer cause vibrations in the diaphragms of [[loudspeaker]]s, [[headphones]], etc. This synthesized sound is contrasted with recording of natural sound, where the mechanical energy of a sound wave is transformed into a signal which will then be converted back to mechanical energy on playback (though [[sample-based synthesis|sampling synthesizers]] significantly blur this distinction).


{{Listen
Synthesizers typically have a [[musical keyboard|keyboard]] which provides the human interface to the instrument and are often thought of as keyboard instruments. However, a synthesizer's human interface does not necessarily have to be a keyboard, nor does a synthesizer strictly need to be playable by a human. Different [[fingerboard synthesizer]] or ribbon controlled synthesizers have also been developed. (See [[sound module]].)
| filename = Jon Appleton - Sashasonjon.oga
| title = Jon Appleton, "Sashasonjon" (1984) from the ''Four Fantasies for Synclavier''
| description = Composed and performed on the Synclavier II in the Bregman Electronic Music Studio, Dartmouth College, Hanover, New Hampshire.
| format = [[Ogg]]
| image =
| pos = right | help = no
}}


Synthesizer-like instruments emerged in the United States in the mid-20th century with instruments such as the [[RCA Mark II]], which was controlled with [[punch card]]s and used hundreds of [[vacuum tubes]]. The [[Moog synthesizer]], developed by [[Robert Moog]] and first sold in 1964, is credited for pioneering concepts such as [[voltage-controlled oscillator]]s, envelopes, [[noise generator]]s, filters, and sequencers. In 1970, the smaller, cheaper [[Minimoog]] standardized synthesizers as self-contained instruments with built-in keyboards, unlike the larger [[modular synthesizer]]s before it.
The term "[[Speech synthesis|speech synthesizer]]" is also used in electronic [[speech processing]], often in connection with [[vocoder]]s.


In 1978, [[Sequential Circuits]] released the [[Prophet-5]], which used [[microprocessor]]s to allow users to store sounds for the first time. MIDI, a [[standardized]] means of synchronizing electronic instruments, was introduced in 1982 and remains an industry standard. The [[Yamaha DX7]], launched in 1983, was a major success and popularized [[digital synthesis]]. [[Software synthesizer]]s now can be run as [[Plug-in (computing)|plug-ins]] or embedded on [[microchip]]s. In the 21st century, [[Analog revival|analog synthesizers returned to popularity]] with the advent of cheaper manufacturing.
==Sound basics==
When natural tonal instruments' sounds are analyzed in the [[frequency]] domain, the [[frequency spectrum|spectra]] of tonal instruments exhibit amplitude peaks at the [[harmonic series (music)|harmonics]]. These harmonics' frequencies are primarily located close to the integer multiples of the tone's [[fundamental frequency]].


Synthesizers were initially viewed as [[avant-garde]], valued by the 1960s [[Psychedelia|psychedelic]] and [[Counterculture of the 1960s|countercultural]] scenes but with little perceived commercial potential. ''[[Switched-On Bach]]'' (1968)'','' a bestselling album of [[Bach]] compositions arranged for synthesizer by [[Wendy Carlos]], took synthesizers to the mainstream. They were adopted by electronic acts and pop and rock groups in the 1960s and 1970s and were widely used in 1980s music. [[Sampling (music)|Sampling]], introduced with the [[Fairlight CMI|Fairlight]] synthesizer in 1979, has influenced genres such as electronic and [[hip hop]] music. Today, the synthesizer is used in nearly every genre of music and is considered one of the most important instruments in the music industry. According to ''[[Fact (UK magazine)|Fact]]'' in 2016, "The synthesizer is as important, and as ubiquitous, in modern music today as the human voice."<ref name="Fact-2016">{{Cite news |last=Twells |first=John |date=2016-09-15 |title=The 14 most important synths in electronic music history – and the musicians who use them |url=https://www.factmag.com/2016/09/15/14-most-important-synths/ |access-date=2024-03-04 |work=[[Fact (UK magazine)|Fact]] |language=en-US}}</ref>
[[Percussion instrument|Percussive]]s and rasps usually lack harmonics, and exhibit spectra that are comprised mainly of noise shaped by the [[resonant frequency|resonant frequencies]] of the structures that produce the sounds. The resonant properties of the instruments (the spectral peaks of which are also referred to as [[formant]]s) also shape the spectra of string, wind, voice and other natural instruments.


== History ==
In most conventional synthesizers, for purposes of resynthesis, recordings of real instruments can be thought to be composed of several components.


=== Precursors ===
These component sounds represent the acoustic responses of different parts of the instrument, the sounds produced by the instrument during different parts of a performance, or the behaviour of the instrument under different playing conditions (pitch, intensity of playing, fingering, etc.) The distinctive timbre, intonation and attack of a real instrument can therefore be created by mixing together these components in such a way as resembles the natural behaviour of the real instrument. Nomenclature varies by synthesizer methodology and manufacturer, but the components are often referred to as [[oscillator]]s or [[partial]]s. A higher fidelity reproduction of a natural instrument can typically be achieved using more oscillators, but increased computational power and human programming is required, and most synthesizers use between one and four oscillators by default.
As [[electricity]] became more widely available, the early 20th century saw the invention of [[electronic musical instrument]]s including the [[Telharmonium]], [[Trautonium]], [[Ondes Martenot]], and [[theremin]].<ref name="Chadabe-2011">{{Cite web|url=http://emusician.com/tutorials/electronic_century1/index1.html|title=The Electronic Century Part I: Beginnings|last=Chadabe|first=Joel|date=2011-09-14|website=[[Electronic Musician]]|url-status=live|archive-url=https://web.archive.org/web/20110914022718/http://emusician.com/tutorials/electronic_century1/index1.html|archive-date=14 September 2011|access-date=12 November 2019}}</ref> In the late 1930s, the [[Hammond Organ Company]] built the [[Novachord]], a large instrument powered by 72 [[voltage-controlled amplifier]]s and 146 [[vacuum tube]]s.<ref>{{Cite web|last=Stewart|first=Dave|date=October 2010|title=Soniccouture Novachord|url=https://www.soundonsound.com/reviews/soniccouture-novachord|access-date=2021-06-19|website=[[Sound on Sound]]}}</ref> In 1948, the Canadian engineer [[Hugh Le Caine]] completed the [[electronic sackbut]], a precursor to [[control voltage|voltage-controlled synthesizers]], with keyboard sensitivity allowing for [[vibrato]], [[glissando]], and [[Envelope (music)|attack]] control.<ref name="Chadabe-2011" />


In 1957, [[Harry Olson]] and Herbert Belar completed the [[RCA Mark II Sound Synthesizer]] at the [[RCA]] laboratories in Princeton, New Jersey. The instrument read [[Punched card|punched paper tape]] that controlled an [[analog synthesizer]] containing 750 vacuum tubes. It was acquired by the [[Columbia-Princeton Electronic Music Center (album)|Columbia-Princeton Electronic Music Center]] and used almost exclusively by [[Milton Babbitt]], a composer at [[Princeton University]].<ref name="Chadabe-2011" />
[[Image:Adsr graph.png|frame|Schematic of [[ADSR]]]]
One of the most important parts of any sound is its amplitude envelope. This envelope determines whether the sound is percussive, like a snare drum, or persistent, like a violin string. Most often, this shaping of the sound's amplitude profile is realized with an "[[ADSR envelope|ADSR]]" (Attack Decay Sustain Release) envelope model applied to control oscillator volumes. Apart from Sustain, each of these stages is modeled by a change in volume (typically exponential).


=== 1960s: Early years ===
* '''Attack time''' is the time taken for initial run-up of the sound level from nil to 100%.
[[File:Bob Moog3.jpg|thumb|[[Robert Moog]] with [[Moog synthesizer]]s. Many of Moog's inventions, such as [[voltage-controlled oscillator]]s, became standard in synthesizers.]]
* '''Decay time''' is the time taken for the subsequent run down from 100% to the designated Sustain level.
The authors of ''Analog Days'' define "the early years of the synthesizer" as between 1964 and the mid-1970s, beginning with the debut of the [[Moog synthesizer]].{{r|Analog Days|p=7}} Designed by the American engineer [[Robert Moog]], the instrument was a [[modular synthesizer]] system composed of numerous separate electronic modules, each capable of generating, shaping, or controlling a sound depending on how each module is connected to other modules by [[patch cable]]s.<ref name="Kozinn-2005">{{Cite news|url=https://www.nytimes.com/2005/08/23/arts/music/robert-moog-creator-of-music-synthesizer-dies-at-71.html|title=Robert Moog, Creator of Music Synthesizer, Dies at 71|last=Kozinn|first=Allan|work=[[The New York Times]]|date=23 August 2005 |access-date=2018-12-03|language=en}}</ref> Moog developed a means of controlling pitch through [[voltage]], the [[voltage-controlled oscillator]].<ref name="McNamee-2010">{{Cite web |last=McNamee |first=David |date=2 August 2010 |title=Hey, what's that sound: Moog synthesisers |url=https://www.theguardian.com/music/2010/aug/02/moog-synthesisers |access-date=8 January 2020 |website=[[The Guardian]] |language=en}}</ref> This, along with Moog components such as [[Envelope generator|envelopes]], [[noise generator]]s, [[Voltage-controlled filter|filters]], and [[Music sequencer|sequencers]], became standard components in synthesizers.<ref name="Vail">{{Cite book|title=The Synthesizer|last=Vail|first=Mark|publisher=[[Oxford University Press]]|year=2014|isbn=978-0195394894}}</ref><ref name="Analog Days" />
* '''Sustain level''', the third stage, is the steady volume produced when a key is held down.
* '''Release time''' is the time taken for the sound to decay from the Sustain level to nil when the key is released. If a key is released during the Attack or Decay stage, the Sustain phase is usually skipped. Similarly, a Sustain level of zero will produce a more-or-less piano-like (or percussive) envelope, with no continuous steady level, even when a key is held. Exponential rates are commonly used because they closely model real physical vibrations, which usually rise or [[exponential decay|decay exponentially]].


Around the same period, the American engineer [[Don Buchla]] created the [[Buchla Electronic Musical Instruments|Buchla Modular Electronic Music System]].<ref name="Lee-2018" /> Instead of a conventional [[Musical keyboard|keyboard]], Buchla's system used touchplates which transmitted [[CV/gate|control voltages]] depending on finger position and force.<ref name="Analog Days" /> However, the Moog's keyboard made it more accessible and marketable to musicians, and keyboards became the standard means of controlling synthesizers.<ref name="Analog Days" /> Moog and Buchla initially avoided the word ''synthesizer'' for their instruments, as it was associated with the RCA synthesizer; however, by the 1970s, it had become the standard term.<ref name="Analog Days" />
Although the oscillations in real instruments also change frequency, most instruments can be modeled well without this refinement. This refinement is necessary to generate a [[vibrato]].


=== 1970s: Portability, polyphony and patch memory ===
==Overview of popular synthesis methods==
Subtractive synthesizers use a simple acoustic model that assumes an instrument can be approximated by a simple signal generator (producing [[sawtooth wave]]s, [[square wave]]s, etc...) followed by a [[audio filter|filter]] which represents the frequency-dependent losses and resonances in the instrument body. For reasons of simplicity and economy, these filters are typically low-order lowpass filters. The combination of simple modulation routings (such as [[pulse width modulation]] and [[oscillator sync]]), along with the physically unrealistic lowpass filters, is responsible for the "classic synthesizer" sound commonly associated with "analog synthesis" and often mistakenly used when referring to software synthesizers using subtractive synthesis. Although [[physical modeling synthesis]], synthesis wherein the sound is generated according to the physics of the instrument, has superseded subtractive synthesis for accurately reproducing natural instrument timbres, the subtractive synthesis paradigm is still ubiquitous in synthesizers with most modern designs still offering low-order lowpass or bandpass filters following the oscillator stage.


In 1970, Moog launched a cheaper, smaller synthesizer, the [[Minimoog]].<ref name="WaPo">{{Cite news|url=https://www.washingtonpost.com/wp-dyn/content/article/2005/08/22/AR2005082200373.html|title=Robert Moog Dies; Created Electronic Synthesizer|last=Bernstein|first=Adam|newspaper=[[The Washington Post]]|date=2005-08-23|access-date=2018-12-03|language=en-US|issn=0190-8286}}</ref><ref name="RedBullMinimoog">{{Cite web|url=http://daily.redbullmusicacademy.com/2017/10/instrumental-instruments-minimoog|title=Red Bull Music Academy Daily|website=daily.redbullmusicacademy.com|access-date=2018-11-28}}</ref> It was the first synthesizer sold in music stores,<ref name="Analog Days" /> and was more practical for live performance. It standardized the concept of synthesizers as self-contained instruments with built-in keyboards.<ref name="Wired">{{Cite magazine|url=https://www.wired.com/2016/07/new-minimoog/|title=Clear Some Space on Your Synth Rack: The Minimoog Returns|magazine=WIRED|access-date=2018-11-28|language=en-US}}</ref><ref name="auto">Franklin Crawford (August 23, 2005). [http://www.news.cornell.edu/stories/Aug05/Moog.obit.fac.html "Robert Moog, Ph.D. '64, inventor of the music synthesizer, dies of brain cancer"]. Cornell University News Service. Retrieved 4 May 2007.</ref> In the early 1970s, the British composer [[Ken Freeman (composer)|Ken Freeman]] introduced the first [[string synthesizer]], designed to emulate [[string section]]s.<ref name=":1">{{Cite web |last=Reid |first=Gordon |date=February 2007 |title=Ken Freeman and the birth of string synthesis |url=http://www.soundonsound.com/people/ken-freeman-birth-string-synthesis |access-date=2016-09-27 |website=[[Sound on Sound]] |publisher=}}</ref> [[File:Minimoog.JPG|thumb|The [[Minimoog]], introduced in 1970, was the first synthesizer sold in music stores.]]
One of the newest systems to evolve inside music synthesis is physical modelling. This involves taking up models of components of musical objects and
creating systems which define action, filters, envelopes and other
parameters over time. The definition of such instruments is virtually
limitless, as one can combine any given models available with any amount
of sources of modulation in terms of pitch, frequency and contour. For
example, the model of a violin with characteristics of a pedal steel
guitar and perhaps the action of piano hammer ... physical modelling
on computers gets better and faster with higher processing ..


After retail stores started selling synthesizers in 1971, other synthesizer companies were established, including [[ARP Instruments|ARP]] in the US and [[Electronic Music Studios|EMS]] in the UK.<ref name="Analog Days" /> ARP's products included the [[ARP 2600]], which folded into a carrying case and had built-in speakers, and the [[ARP Odyssey|Odyssey]], a rival to the Minimoog.<ref name="Analog Days" /> The less expensive EMS synthesizers were used by European [[art rock]] and [[progressive rock]] acts including [[Brian Eno]] and [[Pink Floyd]].<ref name="Analog Days" /> Designs for synthesizers appeared in the amateur electronics market, such as a design published in ''[[Practical Electronics]]'' in 1973.<ref name="PEsynth">{{cite magazine |last=Shaw |first=G D |date=February 1973 |title=Sound Synthesiser |url=https://www.americanradiohistory.com/Practical_Electronics.htm |access-date=10 January 2020 |magazine=[[Practical Electronics]] |page=140 |volume=9 |number=2}}</ref> By the mid-1970s, ARP was the world's largest synthesizer manufacturer,<ref name="Analog Days" /> though it closed in 1981.<ref>{{Cite web|url=https://www.factmag.com/2019/01/07/arp-instruments-founder-alan-r-pearlman-dies-aged-93/|title=ARP Instruments founder Alan R. Pearlman dies aged 93|date=2019-01-07|website=FACT Magazine|language=en-US|access-date=2020-04-12}}</ref>
One of the easiest synthesis systems is to record a real instrument as a digitized waveform, and then play back its recordings at different speeds to produce different tones. This is the technique used in "sampling". Most samplers designate a part of the sample for each component of the ADSR envelope, and then repeat that section while changing the volume for that segment of the envelope. This lets the sampler have a persuasively different envelope using the same note.. ''See also: [[Sample-based synthesis]].''


Early synthesizers were [[Monophonic synth|monophonic]], meaning they could only play one note at a time. Some of the earliest commercial [[polyphonic synthesizer]]s were created by the American engineer [[Tom Oberheim]],<ref name="Lee-2018">{{Cite web|url=https://www.redbull.com/gb-en/electronic-music-early-history-of-the-synth|title=This is the early history of the synthesizer|last=Lee|first=Sammy|date=3 July 2018|website=Red Bull Music|access-date=2019-11-02}}</ref> such as the [[OB-X]] (1979).<ref name="Analog Days" /> In 1978, the American company [[Sequential Circuits]] released the [[Prophet-5]], the first fully [[Programming (music)|programmable]] polyphonic synthesizer.{{r|group=|Vail|p=93|q1=||}} Whereas previous synthesizers required users to adjust cables and knobs to change sounds, with no guarantee of exactly recreating a sound,<ref name="Analog Days" /> the Prophet-5 used [[microprocessor]]s to store sounds in patch memory.<ref name="Fact-2016-1">{{Cite news|date=2016-09-15|title=The 14 most important synths in electronic music history – and the musicians who use them|language=en-US|work=[[Fact (UK magazine)|Fact]]|url=https://www.factmag.com/2016/09/15/14-most-important-synths/|access-date=2024-03-04}}</ref> This facilitated a move from synthesizers creating unpredictable sounds to producing "a standard package of familiar sounds".{{r|Analog Days|p=385|||group=|q1=}}
==Synthesizer basics==
There are two major kinds of synthesizers, [[analog synthesizer|analog]] and [[digital synthesizer|digital]].


=== 1980s: Digital technology ===
There are also many different kinds of synthesis methods, each applicable to both analog and digital synthesizers. These techniques tend to be mathematically related, especially frequency modulation and phase modulation.
The synthesizer market grew dramatically in the 1980s.{{r|group=|Vail|p=57|q1=||}} 1982 saw the introduction of [[MIDI]], a [[standardized]] means of synchronizing electronic instruments; it remains an industry standard.<ref name="FACT-2017">{{Cite news|url=http://www.factmag.com/2017/04/02/ikutaro-kakehashi-life/|title=The life and times of Ikutaro Kakehashi, the Roland pioneer modern music owes everything to|date=2017-04-02|work=FACT Magazine: Music News, New Music.|access-date=2018-09-06|language=en-US}}</ref> An influential [[Sampler (musical instrument)|sampling synthesizer]], the [[Fairlight CMI]], was released in 1979,<ref name="Fact-2016-1" /> with the ability to record and play back [[Sampling (music)|samples]] at different pitches.<ref name="Howell-2015" /> Though its high price made it inaccessible to amateurs, it was adopted by high-profile pop musicians including [[Kate Bush]] and [[Peter Gabriel]]. The success of the Fairlight drove competition, improving sampling technology and lowering prices.<ref name="Howell-2015">{{Cite web|url=https://www.soundonsound.com/techniques/lost-art-sampling-part-1|title=The Lost Art Of Sampling: Part 1|last=Howell|first=Steve|date=August 2015|website=[[Sound on Sound]]|language=en-gb|access-date=12 October 2018}}</ref> Early competing samplers included the [[E-mu Emulator]] in 1981<ref name="Howell-2015" /> and the [[Sampler (musical instrument)#Akai|Akai S-series]] in 1985.<ref name="MusicRadar-2018">{{Cite news|url=https://www.musicradar.com/tuition/tech/a-brief-history-of-sampling-604868|title=A brief history of sampling|work=MusicRadar|access-date=2018-10-12|language=EN-GB}}</ref>
[[File:Yamaha DX7 synthesizer - combined image with diagonal and top views.jpg|thumb|The [[Yamaha DX7]], released in 1983, was the first commercially successful digital synthesizer and was widely used in 1980s pop music.]]
In 1983, Yamaha released the first commercially successful [[digital synthesizer]], the [[Yamaha DX7]].<ref name="shepard2013">{{cite book|title=Refining Sound: A Practical Guide to Synthesis and Synthesizers|last=Shepard|first=Brian K.|publisher=Oxford University Press|isbn=9780199376681|date=2013|quote=The first digital synthesizer to make it into the studios of everyone else, the Yamaha DX7, became one of the most commercially successful synthesizers of all time.}}</ref> Based on [[frequency modulation (FM) synthesis]] developed by the [[Stanford University]] engineer [[John Chowning]],<ref name="holmes_257">{{cite book|chapter-url=https://books.google.com/books?id=hCthQ-bec-QC&pg=PA257|title=Electronic and experimental music: technology, music, and culture|last=Holmes|first=Thom|publisher=[[Taylor & Francis]]|year=2008|isbn=978-0-415-95781-6|edition=3rd|page=257|chapter=Early Computer Music|access-date=2011-06-04}}</ref> the DX7 was characterized by its "harsh", "glassy" and "chilly" sounds, compared to the "warm" and "fuzzy" sounds of analog synthesis.<ref name="Fact-2016" /> The DX7 was the first synthesizer to sell more than 100,000 units{{r|group=|Vail|p=57|q1=||}}and remains one of the bestselling in history.<ref name="shepard2013" /><ref name="holmes_2572">{{cite book |last=Holmes |first=Thom |title=Electronic and experimental music: technology, music, and culture |publisher=[[Taylor & Francis]] |year=2008 |isbn=978-0415957816 |edition=3rd |page=257 |chapter=Early Computer Music |access-date=2011-06-04 |chapter-url=https://books.google.com/books?id=hCthQ-bec-QC&pg=PA257}}</ref> It was widely used in 1980s pop music.<ref name="Brøvig-Hanssen-2016">{{Cite book|url=https://books.google.com/books?id=L2SkCwAAQBAJ&q=%22bon+iver%22+dx7&pg=PA188|title=Digital Signatures: The Impact of Digitization on Popular Music Sound|last1=Brøvig-Hanssen|first1=Ragnhild|last2=Danielsen|first2=Anne|date=2016-02-19|publisher=MIT Press|isbn=9780262034142|language=en}}</ref>


Digital synthesizers typically contained preset sounds emulating acoustic instruments, with algorithms controlled with menus and buttons.<ref name="Analog Days" /> The [[Synclavier]], made with FM technology licensed from Yamaha, offered features such as [[Audio bit depth|16-bit sampling]] and digital recording. With a starting price of $13,000, its use was limited to universities, studios and wealthy artists.<ref>{{Cite web|last=April 2019|first=Computer Music10|title=Blast from the past: New England Digital Synclavier|url=https://www.musicradar.com/news/blast-from-the-past-new-england-digital-synclavier|access-date=2020-09-19|website=MusicRadar|date=10 April 2019|language=en}}</ref><ref>{{Cite web|last=October 2019|first=Scot Solida28|title=The 10 synths and drum machines that defined the '80s|url=https://www.musicradar.com/news/tech/10-synths-that-defined-the-80s-213447|access-date=2020-09-19|website=MusicRadar|language=en}}</ref> The [[Roland D-50]] (1987) blended Roland's linear arithmetic algorithm with samples, and was the first mass-produced synthesizer with built-in digital [[Effects unit|effects]] such as [[Delay (audio effect)|delay]], [[reverb effect|reverb]] and [[Chorus effect|chorus]].{{r|group=|Vail|p=63|q1=||}} In 1988, the Japanese manufacturer [[Korg]] released the [[Korg M1|M1]], a digital synthesizer [[Music workstation|workstation]] featuring sampled [[Transient (acoustics)|transients]] and [[Loop (music)|loops]].<ref name="M1-Retrozone">{{Cite web|url=https://www.soundonsound.com/reviews/korg-m1-retrozone|title=Korg M1 (Retrozone)|last=Vail|first=Mark|date=February 2002|website=[[Sound on Sound]]|access-date=6 November 2019}}</ref> With more than 250,000 units sold, it remains the bestselling synthesizer in history.<ref name="M1-Retrozone" /> The advent of digital synthesizers led to a downturn in interest in analog synthesizers in the following decade.{{r|group=|Vail|p=59|q1=||}}
* [[Subtractive synthesis]]
* [[Additive synthesis]]
* [[Granular synthesis]]
* [[Wavetable synthesis]]
* [[Frequency modulation synthesis]]
* [[Phase distortion synthesis]]
* [[Physical modelling synthesis]]
* [[Sampling (music)|Sampling]]
* [[Trautonium|Subharmonic synthesis]]


=== 1990s–present: Software synthesizers and analog revival ===
== The start of the analogue synthesizer era ==
{{Main|Analog revival}}
The first electric musical synthesizer was invented in 1876 by [[Elisha Gray]] [http://www.obsolete.com/120_years/machines/telegraph/], who was also an independent inventor of the [[telephone]]. The "Musical Telegraph" was a chance by-product of his telephone technology.
1997 saw the release of [[ReBirth (software synthesiser)|ReBirth]] by [[Propellerhead Software]] and Reality by [[Seer Systems]], the first [[software synthesizer]]s that could be played in real time via MIDI.<ref name="Vail" /> In 1999, an update to the music software [[Cubase]] allowed users to run software instruments (including synthesizers) as [[Plug-in (computing)|plug-ins]], triggering a wave of new software instruments.<ref name="MusicRadar-ComputerMusic" /> Propellerhead's [[Reason (software)|Reason]], released in 2000, introduced an array of recognizable virtual studio equipment.<ref name="MusicRadar-ComputerMusic">{{Cite web|url=https://www.musicradar.com/news/tech/a-brief-history-of-computer-music-177299|title=A brief history of computer music|last=Tech|first=Computer Music Specials 2008-10-13T15:29:00 286Z|website=MusicRadar|date=13 October 2008|language=EN-GB|access-date=2019-11-01}}</ref>


The market for patchable and modular synthesizers rebounded in the late 1990s.{{r|group=|Vail|p=32|q1=||}} In the 2000s, older analog synthesizers regained popularity, sometimes selling for much more than their original prices.<ref name="Sound on Sound-2014">{{Cite web|date=March 2014|title=The Analogue Revival|url=https://www.soundonsound.com/reviews/analogue-revival|access-date=6 November 2019|website=[[Sound on Sound]]}}</ref> In the 2010s, new, affordable analog synthesizers were introduced by companies including Moog, Korg, [[Arturia]] and [[Dave Smith Instruments]]. The renewed interest is credited to the appeal of imperfect "organic" sounds and simpler interfaces, and modern [[surface-mount technology]] making analog synthesizers cheaper and faster to manufacture.<ref name="Sound on Sound-2014" />
Gray accidentally discovered that he could control sound from a self vibrating electromagnetic circuit and in doing so invented a basic single note oscillator. The Musical Telegraph used steel reeds whose oscillations were created and transmitted, over a telephone line, by electromagnets. Gray also built a simple loudspeaker device in later models consisting of a vibrating diaphragm in a magnetic field to make the oscillator audible.


== Impact ==
Other early synthesizers used technology derived from electronic [[analog computer]]s, laboratory test equipment, and early [[electronic musical instruments]]. [[Ivor Darreg]] created his [[microtonal music|microtonal]] 'Electronic Keyboard Oboe' in [[1937]]. Another one of the early synthesizers was the [[ANS synthesizer]], a machine that was constructed by the Russian scientist [[Evgeny Murzin]] from 1937 to 1957. Only one copy of ANS was built, and it is currently kept at the Lomonosov University in Moscow.
Early synthesizers were viewed as [[avant-garde]], valued by the 1960s [[Psychedelia|psychedelic]] and [[Counterculture of the 1960s|counter-cultural]] scenes for their ability to make new sounds, but with little perceived commercial potential. ''[[Switched-On Bach]]'' (1968)'','' a bestselling album of [[Bach]] compositions arranged for Moog synthesizer by [[Wendy Carlos]], demonstrated that synthesizers could be more than "random noise machines",<ref name="Kozinn-2005" /> taking them to the mainstream.<ref name="Analog Days">{{cite book |last1=Pinch |first1=Trevor |last2=Trocco |first2=Frank |date=2004 |title=Analog Days: The Invention and Impact of the Moog Synthesizer |publisher=[[Harvard University Press]] |isbn=978-0-674-01617-0}}</ref> However, debates were held about the appropriateness of synthesizers in [[baroque music]], and according to the ''Guardian'' they were quickly abandoned in "serious classical circles".<ref>{{Cite news|url=https://www.theguardian.com/science/2005/aug/25/obituaries.guardianobituaries|title=Obituary: Robert Moog|last=Stearns|first=David Patrick|date=2005-08-25|work=The Guardian|access-date=2020-01-13|language=en-GB|issn=0261-3077}}</ref>
In the [[1950s]], [[RCA]] produced experimental devices to synthesize both voice and music. The giant [[RCA Mark II Sound Synthesizer|Mark II Music Synthesizer]], housed at the [[Columbia-Princeton Electronic Music Center]] in [[New York City]] in [[1958]], was only capable of producing music once it had been completely programmed. The [[vacuum tube]] system had to be manually patched to create each new type of sound. It used a [[paper tape]] [[sequencer]] punched with holes that controlled pitch sources and filters, similar to a mechanical [[player piano]] but able to generate a wide variety of sounds.


Today, the synthesizer is one of the most important instruments in the music industry,<ref name="borthwick2004p1202">{{harvnb|Borthwick|2004|p=[https://books.google.com/books?id=r4bmVbNSnk4C&dq=synthpop&pg=PA119 120]}}</ref> used in nearly every genre.{{r|Analog Days|p=7}} It is considered by the authors of ''Analog Days'' as "the only innovation that can stand alongside the electric guitar as a great new instrument of the age of electricity ... Both led to new forms of music, and both had massive popular appeal."{{r|Analog Days|p=7}} According to ''[[Fact (UK magazine)|Fact]]'' in 2016, "The synthesizer is as important, and as ubiquitous, in modern music today as the human voice."<ref name="Fact-2016" />
In 1958 [[Daphne Oram]] at the [[BBC Radiophonic Workshop]] produced a novel synthesizer using her "[[Oramics]]" technique, driven by drawings on a 35mm film strip. This was used for a number of years at the BBC. [[Hugh Le Caine]], John Hanert, [[Raymond Scott]], Percy Grainger (with Burnett Cross), and others built a variety of automated electronic-music controllers during the late 1940s and 1950s.


=== Rock ===
By the [[1960s]], synthesizers were developed that could be played in real time but were confined to studios because of their size. These synthesizers were usually configured using a modular design, with standalone signal sources and processors being connected with patch cords or by other means, and all controlled by a common controlling device.
[[File:Emerson moog.jpg|thumb|Keyboardist [[Keith Emerson]] performing with a Moog synthesizer in 1970]]The Moog was adopted by 1960s rock acts including the [[The Doors|Doors]], the [[Grateful Dead]], the [[Rolling Stones]], the [[Beatles]], and [[Keith Emerson]].<ref name="BBC News-2005">{{Cite news|url=http://news.bbc.co.uk/2/hi/entertainment/4696651.stm|title=Obituary: Dr Robert Moog|date=2005-08-22|work=[[BBC News]]|access-date=2018-12-03|language=en-GB}}</ref> Emerson was the first major rock musician to perform with the Moog and it became a trademark of his performances, helping take his band [[Emerson, Lake & Palmer]] to global stardom. According to ''Analog Days'', the likes of Emerson, with his Moog performances, "did for the keyboard what [[Jimi Hendrix]] did for the guitar".{{r|group=|Analog Days|p=200|q1=||}} String synthesizers were used by 1970s [[progressive rock]] bands including [[Camel (band)|Camel]], [[Caravan (band)|Caravan]], [[Electric Light Orchestra]], [[Gentle Giant]] and [[Renaissance (band)|Renaissance]].<ref name=":1" />


The portable Minimoog (1970), much smaller than the modular synthesizers before it, made synthesizers more common in live performance.<ref name="auto" /> Early synthesizers could [[Monophonic (synthesizers)|only play one note at a time]], making them suitable for basslines, leads and solos.<ref name="Red Bull">{{Cite web |last=Weiner |first=Sophie |date=20 October 2017 |title=Minimoog: The First Truly Portable Synthesizer |url=http://daily.redbullmusicacademy.com/2017/10/instrumental-instruments-minimoog |access-date=2018-11-28 |website=[[Red Bull Music Academy]]}}</ref> With the rise of polyphonic synthesizers in the 70s and 80s, "the keyboard in rock once more started to revert to the background, to be used for fills and atmosphere rather than for soloing".{{r|group=|Analog Days|p=207|q1=||}} Some acts felt that using synthesizers was "cheating"; [[Queen (band)|Queen]] wrote in their album liner notes that they did not use them.<ref>{{Cite news |last=Snowden |first=Don |date=2012-05-23 |title=Robert Moog: 'I wouldn't call this music' – a classic interview to mark a Google doodle |language=en-GB |work=The Guardian |url=https://www.theguardian.com/music/2012/may/23/robert-moog-interview-google-doodle |access-date=2020-01-13 |issn=0261-3077}}</ref>
Early synthesizers were often experimental special-built devices, usually based on the concept of modularity. [[Don Buchla]], [[Hugh Le Caine]], [[Raymond Scott]] and Paul Ketoff were among the first to build such instruments, in the late 1950s and early 1960s. Only [[Buchla]] later produced a commercial version.


=== African-American music ===
[[Robert Moog]], who had been a student of [[Peter Mauzey]], one of the engineers of the RCA Mark II, created a revolutionary synthesizer that could actually be used by pop musicians. Moog designed the circuits used in his synthesizer while he was at Columbia-Princeton. The Moog synthesizer was first displayed at the [[Audio Engineering Society]] convention in [[1964]]. Like the RCA Mark II, it required a lot of experience to set up the machine for a new sound, but it was smaller and more intuitive. Less like a machine and more like a musical instrument, the Moog synthesizer was at first a curiosity, but by 1968 had caused a sensation.
The Minimoog took a place in mainstream [[African-American music]], most notably in the work of [[Stevie Wonder]],<ref name="Analog Days" /> and in [[jazz]], such as the work of [[Sun Ra]].<ref name="Red Bull" /> In the late 1970s and the early 1980s, the Minimoog was widely used in the emerging [[disco]] genre by artists including [[Abba]] and [[Giorgio Moroder]].<ref name="Red Bull" /> Sampling, introduced with the [[Fairlight CMI|Fairlight]] synthesizer in 1979, has influenced all genres of music<ref name="McNamee-2010" /> and had a major influence on the development of electronic and [[hip hop]] music.<ref>{{Cite news |title=Hip-hop's most influential sampler gets a 2017 reboot |language=en-US |work=Engadget |url=https://www.engadget.com/2017/01/22/akai-mpc-live-mpc-x/ |access-date=2018-04-03}}</ref><ref name="Vox-2018">{{Cite news |title=Meet the unassuming drum machine that changed music forever |work=Vox |url=https://www.vox.com/culture/2018/4/16/16615352/akai-mpc-music-history-impact |access-date=2018-05-11}}</ref>


=== Electronic music ===
[[Micky Dolenz]] of [[The Monkees]] bought one of the first three Moog synthesizers and the first commercial release to feature a Moog synthesizer was [[The Monkees]]' fourth album, ''[[Pisces, Aquarius, Capricorn & Jones Ltd.]]'', in 1967, which also became the first album featuring a synthesizer to hit #1 on the charts. Also among the first music performed on this synthesizer was the million-selling [[1968]] album ''[[Switched-On Bach]]'' by [[Wendy Carlos]]. ''Switched-On Bach'' was one of the most popular classical-music recordings ever made. During the late 1960s, hundreds of other popular recordings used Moog synthesizer sounds. The Moog synthesizer even spawned a subculture of record producers who made novelty "Moog" recordings, depending on the odd new sounds made by their synthesizers (which were not always Moog units) to draw attention and sales.
In the 1970s, electronic music composers such as [[Jean Michel Jarre]]<ref>{{Cite web |title=Jean Michel Jarre {{!}} Biography, Albums, Streaming Links {{!}} AllMusic |url=http://www.allmusic.com/artist/jean-michel-jarre-mn0000230593 |access-date=2017-12-12 |website=AllMusic}}</ref> and [[Isao Tomita]]<ref name="jenkins_20072">{{citation |author=Mark Jenkins |title=Analog synthesizers: from the legacy of Moog to software synthesis |url=https://books.google.com/books?id=c3EHIpo0DKwC&pg=PA133 |pages=133–4 |year=2007 |publisher=[[Elsevier]] |isbn=978-0-240-52072-8 |access-date=2011-05-27 |author-link=Mark Jenkins (musician)}}</ref><ref name="allmusic_tomita2">{{allMusic|id=q6265|label=Tomita|access-date=2011-06-04}}</ref><ref>{{cite magazine |title=Snowflakes Are Dancing |url=http://www.billboard.com/artist/tomita/25745#/album/tomita/snowflakes-are-dancing-electronic-performances/85902/review |access-date=2011-05-28 |magazine=[[Billboard (magazine)|Billboard]]}}</ref> released successful synthesizer-led instrumental albums. This influenced the emergence of [[synth-pop]] from the late 1970s to the early 1980s. The work of German [[krautrock]] bands such as [[Kraftwerk]]<ref>{{Cite web |title=Kraftwerk |url=http://www.discogs.com/artist/4654-Kraftwerk |access-date=2017-12-12 |website=Discogs |language=en}}</ref> and [[Tangerine Dream]], British acts such as [[John Foxx]], [[Gary Numan]] and [[David Bowie]], African-American acts such as [[George Clinton (funk musician)|George Clinton]] and [[Zapp (band)|Zapp]], and Japanese electronic acts such as [[Yellow Magic Orchestra]] and [[Kitaro]] were influential in the development of the genre.<ref name="borthwick2004p1202" />


The [[Roland TB-303]] (1981), in conjunction with the [[Roland TR-808]] and [[TR-909]] drum machines, became a foundation of [[electronic dance music]] genres such as [[House music|house]] and [[techno]] when producers acquired cheap second-hand units later in the decade.<ref>{{Cite news |last=Beaumont-Thomas |first=Ben |date=2014-02-14 |title=Roland launch new versions of the iconic 808, 909 and 303 instruments |language=en-GB |work=The Guardian |url=https://www.theguardian.com/music/2014/feb/14/roland-launch-new-instruments-808-909-303 |access-date=2019-11-02 |issn=0261-3077}}</ref> The authors of ''Analog Days'' connect the synthesizer's origins in 1960s psychedelia to the [[rave]]s and British "[[second summer of love]]" of the 1980s and the club scenes of the 1990s and 2000s.{{r|group=|Analog Days|p=321|q1=||}}
[[Image:SwitchedOnBach.jpg|thumb|150px|right|The cover of ''Switched-On Bach'']]


=== Pop ===
Moog also established standards for control interfacing, with a logarithmic 1-volt-per-octave pitch control and a separate pulse triggering signal. This standardization allowed synthesizers from different manufacturers to operate together. Pitch control is usually performed either with an organ-style keyboard or a [[music sequencer]], which produces a series of control voltages over a fixed time period and allows some automation of music production.
Gary Numan's 1979 hits "[[Are 'Friends' Electric?]]" and "[[Cars (song)|Cars]]" made heavy use of synthesizers.<ref name="Warren20012">{{citation |last=George-Warren |first=Holly |title=The Rolling Stone Encyclopedia of Rock & Roll |url=https://archive.org/details/rollingstoneency00holl/page/707 |pages=[https://archive.org/details/rollingstoneency00holl/page/707 707–734] |year=2001 |publisher=Fireside |isbn=0-7432-0120-5}}</ref><ref name="Robbins19912">{{citation |last=Robbins |first=Ira A |title=The Trouser Press Record Guide |page=473 |year=1991 |publisher=Maxwell Macmillan International |isbn=0-02-036361-3}}</ref> [[Orchestral Manoeuvres in the Dark|OMD]]'s "[[Enola Gay (song)|Enola Gay]]" (1980) used distinctive electronic percussion and a synthesized melody. [[Soft Cell]] used a synthesized melody on their 1981 hit "[[Tainted Love#Soft Cell version (1981)|Tainted Love]]".<ref name="borthwick2004p1202" /> [[Nick Rhodes]], keyboardist of [[Duran Duran]], used synthesizers including the [[Roland Jupiter-4]] and [[Jupiter-8]].<ref name="Black20032">{{citation |last=Black |first=Johnny |title=The Greatest Songs Ever! Hungry Like the Wolf |url=http://www.blender.com/guide/articles.aspx?id=829 |journal=Blender |issue=January/February 2003 |year=2003 |archive-url=https://web.archive.org/web/20071013131909/http://blender.com/guide/articles.aspx?id=829 |access-date=2008-04-16 |archive-date=October 13, 2007 |url-status=dead}}</ref> Chart hits include [[Depeche Mode]]'s "[[Just Can't Get Enough (Depeche Mode song)|Just Can't Get Enough]]" (1981),<ref name="borthwick2004p1202" /> [[the Human League]]'s "[[Don't You Want Me]]"<ref name="borthwick2004p1302">{{harvnb|Borthwick|2004|p=[https://books.google.com/books?id=r4bmVbNSnk4C&pg=PA129 130]}}</ref> and works by [[Ultravox]].<ref name="borthwick2004p1202" />


In the 1980s, digital synthesizers were widely used in pop music.<ref name="Brøvig-Hanssen-2016" /> The Yamaha DX7, released in 1983, became a pop staple, used on songs by [[A-ha]], [[Kenny Loggins]], [[Kool & the Gang]].<ref name="Fact-2016" /> Its "E PIANO 1" preset became particularly famous,<ref name="Fact-2016" /> especially for [[power ballad]]s,<ref name="Guardian-DX7">{{Cite web|url=https://www.theguardian.com/music/2018/aug/14/the-greatest-preset-sounds-in-pop-music|title=More synthetic bamboo! The greatest preset sounds in pop music|last=Simpson|first=Dave|date=2018-08-14|website=The Guardian|language=en|access-date=2018-10-19}}</ref> and was used by artists including [[Whitney Houston]], [[Chicago (band)|Chicago]],<ref name="Guardian-DX7" /> [[Prince (musician)|Prince]],<ref name="Brøvig-Hanssen-2016" /> [[Phil Collins]], [[Luther Vandross]], [[Billy Ocean]],<ref name="Fact-2016" /> and [[Celine Dion]].<ref>{{cite web|url=https://www.dummymag.com/features/borne-into-the-90s-pt1|title=Borne into the 90s [pt.1]|last1=Saxelby|first1=Ruth|website=Dummy Mag|language=en|access-date=September 15, 2011}}</ref> [[Korg M1]] presets were widely used in 1990s house music, beginning with [[Madonna]]'s 1990 single "[[Vogue (Madonna song)|Vogue]]".<ref name="Gizmodo">{{Cite web|url=https://www.gizmodo.com.au/2015/12/a-beginners-guide-to-the-synth/|title=A Beginner's Guide To The Synth|date=2015-12-29|website=Gizmodo Australia|language=en|access-date=2019-04-28}}</ref>
Other early commercial synthesizer manufacturers included [[ARP Instruments, Inc.|ARP]], who also started with modular synthesizers before producing all-in-one instruments, and British firm [[Electronic Music Studios (London) Ltd|EMS]].


=== Film and television ===
In 1970, Moog designed an innovative synthesizer with a built-in keyboard and without modular design--the analog circuits were retained, but made interconnectable with switches in a simplified arrangement called "normalization". Though less flexible than a modular design, it made the instrument more portable and easier to use. This first prepatched synthesizer, the [[Minimoog]], became very popular, with over 12,000 units sold. The [[Minimoog]] also influenced the design of nearly all subsequent synthesizers.
Synthesizers are common in film and television soundtracks.{{r|group=|Analog Days|p=273|q1=||}} In 1969, [[Mort Garson]] used a Moog to compose a soundtrack for the televised footage of the [[First moonwalk|Apollo 11 moonwalk]], creating a link between electronic music and space in the American popular imagination.<ref name=":0">{{Cite web |last=Weiner |first=Sophie |date=27 September 2016 |title=Mort Garson |url=https://daily.redbullmusicacademy.com/2016/09/mort-garson-feature |access-date=2024-01-02 |website=[[Red Bull Music Academy]] |language=en}}</ref> ARP synthesizers were used to create sound effects for the 1977 science fiction films ''[[Close Encounters of the Third Kind]]{{r|group=|Analog Days|p=9|q1=||}}'' and ''[[Star Wars (film)|Star Wars]]'', including the "voice" of the robot [[R2-D2]].{{r|group=|Analog Days|p=273|q1=||}}


In the 70s and 80s, synthesizers were used in the scores for thrillers and horror films including ''[[A Clockwork Orange (film)|A Clockwork Orange]]'' (1971), ''[[Apocalypse Now]]'' (1979), ''[[The Fog]]'' (1980) and ''[[Manhunter (film)|Manhunter]]'' (1986). [[Brad Fiedel]] used a Prophet synthesizer to record [[The Terminator (soundtrack)|the soundtrack]] for ''[[The Terminator]]'' (1984),<ref>{{Cite news|last=Stevenson|first=Seth|date=2014-02-26|title=What Is the Time Signature of the Ominous Electronic Score of The Terminator?|language=en-US|work=[[Slate (magazine)|Slate]]|url=https://slate.com/culture/2014/02/the-time-signature-of-the-terminator-score-is-a-mystery-for-the-ages.html|access-date=2023-02-09|issn=1091-2339}}</ref> and the filmmaker [[John Carpenter]] used them extensively for his soundtracks.<ref name="SOS_July2016">{{cite magazine|author=Paul Tingen|title=John Carpenter - Film Director & Composer|url=https://www.soundonsound.com/people/john-carpenter|magazine=[[Sound on Sound]]|issue=July 2016}}</ref> Synthesizers were used to create themes for television shows including ''[[Knight Rider (1982 TV series)|Knight Rider]]'' (1982)'', [[Twin Peaks]]'' (1990) and ''[[Stranger Things]]'' (2016).<ref>{{Cite web|url=https://www.bbc.co.uk/programmes/articles/3ryZCdlXtpkNG3yRl3Y7pnh/a-tribute-to-the-synth-how-synthesisers-revolutionised-modern-music|title=A tribute to the synth: how synthesisers revolutionised modern music|website=[[BBC]]|language=en-GB|access-date=2019-11-06}}</ref>
<!-- Image with unknown copyright status removed: [[Image:YamahaDX7.jpg|thumbnail|right|250px|A classic FM synthesizer, the [[Yamaha DX7]].]] -->


=== Jobs ===
In the 1970s miniaturized solid-state components allowed synthesizers to become self-contained, portable instruments. They began to be used in live performances. Soon, electronic synthesizers had become a standard part of the popular-music repertoire, with Chicory Tip's "Son of my Father" as the first #1 hit to feature a synthesizer.
The rise of the synthesizer led to major changes in music industry jobs, comparable to the earlier arrival of [[Sound film|sound in film]], which put live musicians accompanying [[silent film]]s out of work.<ref>''From Stage to Studio: Musicians and the Sound Revolution,'' ''1890–1950'' (Baltimore: Johns Hopkins University Press, 1996).</ref> With its ability to imitate instruments such as strings and horns, the synthesizer threatened the jobs of [[session musician]]s. For a period, the Moog was banned from use in commercial work, a restriction negotiated by the [[American Federation of Musicians]] (AFM).<ref name="Analog Days" /> Robert Moog felt that the AFM had not realized that his instrument had to be studied like any other, and instead imagined that "all the sounds that musicians could make somehow existed in the Moog — all you had to do was push a button that said '[[Jascha Heifetz]]' and out would come the most fantastic violin player".<ref>Interview with Bob Moog, ''Plug,'' Fall 1974, p.2.</ref>


The musician [[Walter Sear]] persuaded the AFM that the synthesizer demanded skill, and the category of "synthesizer player" was accepted into the union/ However, players were subject to "suspicion and hostility" for years.{{r|group=|Analog Days|p=149|q1=||}} In 1982, following a tour by [[Barry Manilow]] using synthesizers instead of an orchestra, the British [[Musicians' Union (United Kingdom)|Musicians' Union]] attempted to ban synthesizers, attracting controversy.<ref name="MUhistory2">{{cite web|url=http://www.muhistory.com/contact-us/1971-1980/|title=1981–1990 – The Musicians' Union: A History (1893–2013)|website=www.muhistory.com}}</ref> That decade, a few musicians skilled at programming the Yamaha DX7 found employment creating sounds for other acts.<ref>{{cite book|url=https://books.google.com/books?id=3XtPAwAAQBAJ&pg=PT81|title=The Oxford Handbook of Computer Music|date=September 16, 2009|publisher=Oxford University Press|isbn=9780199887132|editor=Roger T. Dean|page=81}}</ref>
The first movie to make use of synthesized music was the [[James Bond]] film ''[[On Her Majesty's Secret Service (film)|On Her Majesty's Secret Service]]'', in 1969. From that point on, a large number of movies were made with synthesized music. A few movies, like 1982's [[The Thing|John Carpenter's "The Thing"]], used all synthesized music in their musical scores.


== Sound synthesis {{anchor|Theory}} == <!-- Other articles link here. -->
=== Homemade synthesizers ===
[[File:Synth Diag.svg|thumb|right|160px|In [[subtractive synthesis]], complex waveforms are generated by oscillators and then shaped with filters to remove or boost specific frequencies.]]Synthesizers generate audio through various forms of [[analog synthesizer|analog]] and [[digital synthesizer|digital]] synthesis.
[[Image:Maplin 5600.jpg|right]] During the late 1970s and early 1980s, it was relatively easy to build one's own synthesizer. Designs were published in hobby electronics magazines (notably the Formant modular synth, an impressive [[DIY]] clone of the Moog system, published by Elektor) and complete kits were supplied by companies such as Paia in the US, and Maplin Electronics in the UK (although often these designs were actually rebranded versions of synths originally built by hobbyists, for example, the Maplin 5600 was a creation of the Australian scientist [[Trevor Marshall]]).


* In [[subtractive synthesis]], complex [[waveform]]s are generated by oscillators and then shaped with filters to remove or boost specific frequencies.<ref name="Vail" /> Subtractive synthesis is characterized as "rich" and "warm".<ref name="MusicTech-2019">{{Cite web|date=2019-06-04|title=All you need to know about subtractive synthesis|url=https://www.musictech.net/guides/essential-guide/what-is-subtractive-synthesis/|access-date=2020-11-23|website=MusicTech|language=en-GB}}</ref>
== Electronic organs vs. synthesizers ==
*In [[additive synthesis]], a large number of waveforms, usually [[sine wave]]s, are combined into a composite sound.<ref name="Vail" /><ref name="Crute-2019-1">{{Cite web|last=Crute|first=Adam|date=2019-07-03|title=Introduction to additive and phase distortion synthesis|url=https://www.musictech.net/guides/essential-guide/additive-and-phase-distortion-synthesis/|access-date=2020-11-23|website=MusicTech|language=en-GB}}</ref>
* In [[frequency modulation (FM) synthesis]], also known as phase modulation, a carrier wave is modulated with the frequency of a modulator wave; the resulting complex waveform can, in turn, be modulated by another modulator, and this by another, and so on.<ref name="Crute-2019">{{Cite web|url=https://www.musictech.net/guides/essential-guide/how-fm-synthesis-works/|title=Learning the basics of FM synthesis and how it works|last=Crute|first=Adam|date=2019-07-01|website=MusicTech|language=en-GB|access-date=2019-11-06}}</ref> FM synthesis is characterized as "harsh", "glassy" and "chilly".<ref name="Fact-2016" />
* [[Phase distortion synthesis]], implemented in [[Casio CZ synthesizers]], is similar to FM synthesis.<ref>{{Cite web |date=2015-03-18 |title=What is phase distortion synthesis? |url=https://www.musicradar.com/news/tech/what-is-phase-distortion-synthesis-618081 |access-date=2023-10-18 |website=[[MusicRadar]] |language=en}}</ref>
*In [[wavetable synthesis]], synthesizers modulate smoothly between digital representations of different waveforms, changing the shape and [[timbre]].<ref>{{Cite web|date=2019-08-26|title=The science of wavetable synthesis|url=https://www.musictech.net/guides/essential-guide/science-wavetable-synthesis/|access-date=2020-11-23|website=MusicTech|language=en-GB}}</ref>
* In [[sample-based synthesis]], instead of sounds being created by synthesizers, samples ([[digital recording]]s of sounds) are played back and shaped with components such as filters, envelopes and LFOs.<ref>{{Cite web|date=2019-07-26|title=The history of sample-based synthesis|url=https://www.musictech.net/guides/essential-guide/history-sample-based-synthesis/|access-date=2020-11-23|website=MusicTech|language=en-GB}}</ref>
* In [[vector synthesis]], pioneered by the [[Prophet VS]], users crossfade between different sound sources using controllers such as joysticks, envelopes and LFOs.<ref>{{Cite web|last=|first=|date=|title=Q. Can you explain the origins of wavetable, S&S and vector synthesis?|url=https://www.soundonsound.com/sound-advice/q-can-you-explain-origins-wavetable-ss-and-vector-synthesis|archive-url=|archive-date=|access-date=2021-01-20|website=[[Sound on Sound]]}}</ref>
*In [[granular synthesis]], an audio sample is split into "grains", usually between one hundredth and one tenth of a second in length, which are recombined and played back.<ref>{{Cite web|last=Price|first=Simon|date=December 2005|title=Granular Synthesis|url=https://www.soundonsound.com/techniques/granular-synthesis|access-date=2021-05-28|website=[[Sound on Sound]]}}</ref>
*In [[physical modelling synthesis]], a mathematical model of a physical sound source is created.<ref>{{cite web|url=http://www.soundonsound.com/sos/1994_articles/jul94/yamahavl1.html|title=Yamaha VL1|work=Sound On Sound|date=July 1994|archive-url=https://web.archive.org/web/20150608005838/http://www.soundonsound.com/sos/1994_articles/jul94/yamahavl1.html|archive-date=8 June 2015}}</ref>


== Components ==
All organs (including acoustic) are based on the principle of [[Additive synthesis|additive or Fourier Synthesis]]: Several sine tones are mixed to form a more complex waveform. In the original [[Hammond organ]], built in 1935, these sine waves were generated using revolving tone wheels which induced a current in an electromagnetic pick-up. For every [[harmonic]], there had to be a separate [[tonewheel]]. In more modern electronic organs, electronic [[oscillator]]s serve to produce the sine waves. Organs tend to use fairly simple "formant" filters to effect changes to the oscillator tone--automation and modulation tend to be limited to simple vibrato.


=== Oscillators ===
Most analog synthesizers produce their sound using subtractive synthesis. In this method, a waveform rich in overtones, usually a sawtooth or pulse wave, is produced by an oscillator. The signal is then passed through filters, which preferentially remove some overtones to obtain a sound which may be an imitation of an acoustical instrument, or may be a unique tonality not existing in acoustical form. An ADSR envelope generator then controls a VCA (voltage controlled amplifier) to give the sound a loudness contour.
{{Listen
| header = <span style="font-size:120%;">'''Oscillator wave shape example'''</span>
| filename = Saw_triangle_comparison_moog_synthesizer.ogg
| title = Sawtooth wave compared to triangle wave
| description = An example of two identical groups of notes being played first by a sawtooth oscillator, and then by a triangle oscillator.
| format = [[Ogg]]
| image =
| pos = right | help = no
}}
[[Electronic oscillator|Oscillators]] produce waveforms (such as [[Sawtooth wave|sawtooth]], [[Sine wave|sine]], or [[pulse wave]]s) with different [[timbre]]s.<ref name="Vail" />


=== Voltage-controlled amplifiers ===
Other circuits, such as [[waveshaper]]s and [[ring modulator]]s, can change the tonality in non-harmonic ways or create [[distortion]] effects which are often not found in natural sound sources. In spite of the popularity of modern digital and software-based synthesizers, the purely analog modular synthesizer still has its proponents, with a number of manufacturers producing modules little different from Moog's 1964 circuit designs, as well as many newer variations like the Moogalicious 900, invented in 1998.
[[Voltage-controlled amplifier]]s (VCAs) control the volume or [[Gain (electronics)|gain]] of the audio signal. VCAs can be modulated by other components, such as LFOs and envelopes.<ref name="Vail" /> A VCA is a [[preamp]] that boosts (amplifies) the electronic signal before passing it on to an external or built-in power amplifier, as well as a means to control its amplitude (volume) using an [[attenuator (electronics)|attenuator]]. The gain of the VCA is affected by a ''control voltage'' (CV), coming from an envelope generator, an LFO, the keyboard or some other source.<ref name="Reid2000">
{{cite journal|last=Reid|first=Gordon|year=2000|title=Synth Secrets, Part 9: An Introduction to VCAs|url=http://www.soundonsound.com/sos/jan00/articles/synthsecrets.htm|url-status=bot: unknown|journal=Sound on Sound|issue=January 2000|archive-url=https://web.archive.org/web/20160404103507/http://www.soundonsound.com/sos/jan00/articles/synthsecrets.htm|archive-date=2016-04-04|access-date=2010-05-25}}</ref>


=== Filters ===
== Microprocessor controlled and polyphonic analog synthesizers ==
{{multiple image |align=right |direction=vertical
Early analog synthesizers were always monophonic, producing only one tone at a time. A few, such as the Moog Sonic Six, [[ARP Odyssey]] and EML 101, were capable of producing two different pitches at a time when two keys were pressed. [[Polyphony (instrument)|Polyphony]] (multiple simultaneous tones, which enables [[Chord (music)|chord]]s), was only obtainable with electronic organ designs at first. Popular electronic keyboards combining organ circuits with synthesizer processing included the ARP Omni and Moog's Polymoog and Opus 3.
<!-- ToDo: more appropriate figures (ex.[[:uk:File:Image040.jpg]]) is required here. -->
|image1=Acoustic filters.svg|width1=160|caption1=Various <!-- acoustic --> filter modes.
}}
{{Main|Voltage-controlled filter}}


[[Voltage-controlled filter]]s (VCFs) "shape" the sound generated by the oscillators in the frequency domain, often under the control of an envelope or LFO. These are essential to subtractive synthesis. Filters are particularly important in [[subtractive synthesis]], being designed to pass some frequency regions (or "bands") through [[attenuation|unattenuated]] while significantly attenuating ("subtracting") others. The [[low-pass filter]] is most frequently used, but [[band-pass filter]]s, [[band-reject filter]]s and [[high-pass filter]]s are also sometimes available.{{Citation needed|date=November 2020}}
By 1976, the first true music synthesizers to offer polyphony had begun to appear, most notably in the form of Moog's [[Polymoog]], the [[Yamaha CS-80]] and the Oberheim Four-Voice. These early instruments were very complex, heavy, and costly. Another feature that began to appear was the recording of knob settings in a digital memory, allowing the changing of sounds quickly.


{{Listen
When microprocessors first appeared on the scene in the early 1970s, they were expensive and difficult to apply.
| header = <span style="font-size:120%;">'''Filtered sawtooth'''</span>
| filename = Filtered sawtooth moog.ogg
| title = Filtered sawtooth
| description = A sawtooth wave with a low pass filter.
| filename2 = Filtered envelope sawtooth moog.ogg
| title2 = Filter envelope
| description2 = A sawtooth wave with an ADSR envelope applied to its filter
| filename3 = Filtered envelope resonance sawtooth moog.ogg
| title3 = Filter envelope with resonance
| description3 = With added filter resonance effect, for a "wet" sound.
| format = [[Ogg]]
| image =
| pos = right | help = no
}}


The filter may be controlled with a second ADSR envelope. An "envelope modulation" ("env mod") parameter on many synthesizers with filter envelopes determines how much the envelope affects the filter. If turned all the way down, the filter produces a flat sound with no envelope. When turned up the envelope becomes more noticeable, expanding the minimum and maximum range of the filter. The envelope applied on the filter helps the sound designer generating long notes or short notes by moving the parameters up and down such as decay, sustain and finally release. For instance by using a short decay with no sustain, the sound generated is commonly known as a ''[[stab (music)|stab]]''. Sound designers may prefer shaping the sound with a filter instead of volume.{{Citation needed|date=November 2020}}
The first practical polyphonic synth, and the first to use a microprocessor as a controller, was the [[Sequential Circuits]] Prophet-5 introduced in [[1978]]. For the first time, musicians had a practical polyphonic synthesizer that allowed all knob settings to be saved in computer memory and recalled by pushing a button. The Prophet-5 was also physically compact and lightweight, unlike its predecessors. This basic design paradigm became a standard among synthesizer manufacturers, slowly pushing out the more complex (and more difficult to use) modular design.


{{anchor|ADSR envelope}}{{anchor|Envelope generator}}<!-- There are several important redirects to this section -->
One of the first real-time polyphonic digital music synthesizers was the [[Coupland Digital Music Synthesizer]]. It was much more portable than a piano but never reached commercial production.


== MIDI control ==
=== Envelopes ===
{{Main|Envelope (music)}}
Synthesizers became easier to integrate and synchronize with other electronic instruments and controllers with the invention in [[1983]] of [[MIDI]], a [[timecode|time-coded]] [[serial communications|serial interface]] cable. MIDI interfaces are now almost ubiquitous on music equipment, and commonly available on [[personal computer]]s (PCs).
[[File:ADSR parameter.svg|thumb|right|213px|Schematic of ADSR]]
{{clear2|right}}


Envelopes control how sounds change over time. They may control parameters such as [[amplitude]] (volume), filters (frequencies), or pitch. The most common envelope is the ADSR (attack, decay, sustain, release) envelope:<ref name="Vail" />
The so-called [[General MIDI]] (GM) [[software]] standard was devised in [[1991]] to serve as a consistent way of describing a set of over 200 tones (including percussion) available to a PC for playback of musical scores. For the first time, a given MIDI preset would consistently produce an oboe or guitar sound (etc.) on any GM-conforming device. The file format ''.mid'' was also established and became a popular standard for exchange of music scores between computers.


*'''Attack''' is the time taken for initial run-up of level from nil to peak, beginning when the note is triggered.
[[Open Sound Control|OSC]], OpenSound Control, is a proposed replacement for MIDI which was designed for networking. In contrast with MIDI, OSC is fast enough to allow thousands of synthesizers or computers to share music performance data over the internet in realtime.
*'''Decay''' is the time taken for the subsequent run down from the attack level to the designated sustain level.
*'''Sustain''' is the level during the main sequence of the sound's duration, until the key is released.
*'''Release''' is the time taken for the level to decay from the sustain level to zero after the key is released.


{{Listen
== FM synthesis ==
| header = <span style="font-size:120%;">'''ADSR envelope example'''</span>
[[FM Synthesis]] is when one [[oscillator]] is used to [[modulate]] another [[oscillator]]. This [[oscillator]] can then be used to [[modulate]] another [[oscillator]] or a parameter of the synth or 'patch' such as rate, depth, etc. of LFOs (Low Frequency Oscillators). These usually control parameters, but oscillators can modulate the LFOs do give a more complex sound. Oscillators can in turn modulate '''themselves''' and produce [[White Noise]].
| filename = Adsr envelope sawtooth moog synthesizer.ogg
[[John Chowning]] of [[Stanford University]] is generally considered to be the first researcher to conceive of producing musical sounds by causing one oscillator to modulate the pitch of another. This is called [[FM synthesis|FM]], or frequency modulation, synthesis. Chowning's early FM experiments were done with software on a mainframe computer.
| title = ADSR envelope with sawtooth wave
| description = An ADSR envelope applied to note amplitude.
| format = [[Ogg]]
}}


=== Low-frequency oscillators ===
Most FM synthesizers use sine-wave oscillators (called operators) which, in order for their fundamental frequency to be sufficiently stable, are normally generated digitally (several years after Yamaha popularized this field of synthesis, they were outfitted with the ability to generate wavforms other than a sine wave). Each operator's audio output may be fed to the input of another operator, via an ADSR or other envelope controller. The first operator modulates the pitch of the second operator, in ways that can produce complex waveforms. FM synthesis is fundamentally a type of additive synthesis and the filters used in subtractive synthesizers were typically not used in FM synthesizers until the mid-[[1990s]]. By cascading operators and programming their envelopes appropriately, some subtractive synthesis effects can be simulated, though the sound of a resonant analog filter is almost impossible to achieve. FM is well-suited for making sounds that subtractive synthesizers have difficulty producing, particularly non-harmonic sounds, such as bell timbres.
{{Main|Low-frequency oscillation}}


[[Low-frequency oscillator]]s (LFOs) produce waveforms used to modulate parameters, such as the pitch of oscillators (producing [[vibrato]]).<ref name="Vail" />
Chowning's patent covering FM sound synthesis was licensed to giant Japanese manufacturer [[Yamaha Corporation|Yamaha]], and made millions for Stanford during the [[1980s]]. Yamaha's first FM synthesizers, the [[Yamaha GS-1|GS-1]] and [[Yamaha GS-2|GS-2]], were costly and heavy. Keyboardist [[Brent Mydland]] of the [[Grateful Dead]] used a GS-2 extensively in the 1980s. They soon followed the GS series with a pair of smaller, preset versions - the CE20 and CE25 Combo Ensembles [http://www.soundonsound.com/sos/aug01/articles/retrofmpt1.asp]- which were targeted primarily at the home organ market and featured four-octave keyboards. Their third version, the [[Yamaha DX7|DX-7]] ([[1983]]), was about the same size and weight as the Prophet-5, was reasonably priced, and depended on custom digital integrated circuits to produce FM tonalities. The DX-7 was a smash hit and can be heard on many recordings from the mid-1980s. Yamaha later licensed its FM technology to other manufacturers. By the time the Stanford patent ran out, almost every personal computer in the world contained an audio input-output system with a built-in 4-operator FM digital synthesizer -- a fact most PC users are not aware of.


=== Arpeggiators ===
The GS1 and GS2 had their small memory strips "programmed" by a hardware-based machine that existed only in Hamamatsu (Yamaha Japan headquarters) and Buena Park (Yamaha's U.S. headquarters). It had four 7" monochrome video monitors, each displaying the parameters of one of the four operators within the GS1/2. At that time a single "operator" was a 14"-square circuit board -- this was of course long before Yamaha condensed the FM circuitry to a single ASIC. Interestingly, what became the DX7's 4-stage ADSR at that time actually had many break points....about 75 (which proved quite ineffective in modifying sounds, hence the subsequent regress to the analog-synth type ADSR envelope generators).
{{Listen
| header = <span style="font-size:120%;">'''Trance Lead'''</span>
| filename = Arpeggiator.ogg
| title = sound sample of arpeggiator <!-- Arpeggiator.ogg -->
| description = A sample of Eurodance synthesizer riff with use of rapid 1/16 notes arpeggiator
| format = [[Ogg]]
| pos = right | help = no
}}
Arpeggiators, included in many synthesizer models, take input [[Chord (music)|chords]] and convert them into [[arpeggio]]s. They usually include controls for speed, range and mode (the movement of the arpeggio).<ref>{{Cite web|last=Aisher|first=Bruce|date=2013-02-01|title=An introduction to arpeggiators|url=https://www.attackmagazine.com/technique/tutorials/an-introduction-to-arpeggiators/|access-date=2021-12-16|website=Attack Magazine|language=en-US}}</ref>


=== Controllers ===
During the time period from 1981-1984, Yamaha built a recording studio on Los Feliz Boulevard in Los Angeles dubbed the "Yamaha R&D Studio". Besides operating as a commercial recording studio facility, it served as a test area for new musical instrument products sold by what then was called the "Combo" division of Yamaha.
Synthesizers are often controlled with electronic or digital [[Musical keyboard|keyboards]] or [[MIDI controller]] keyboards, which may be built into the synthesizer unit or attached via connections such as [[CV/gate]], [[USB]], or [[MIDI]].<ref name="Vail" /> Keyboards may offer [[Keyboard expression|expression]] such as velocity sensitivity and aftertouch, allowing for more control over the sound.<ref name="Vail" /> Other controllers include [[ribbon controller]]s, which track the movement of the finger across a touch-sensitive surface; [[wind controller]]s, played similarly to [[woodwind instrument]]s; motion-sensitive controllers similar to video game [[motion controller]]s; [[Electronic drum|electronic drum pads]], played similarly to the heads of a [[drum kit]]; touchplates, which send signals depending on finger position and force; controllers designed for [[microtonal tuning]]s;<ref name="Vail" /> [[touchscreen]] devices such as [[Tablet computer|tablets]] and [[smartphone]]s;<ref name="Vail" /> and fingerpads.<ref name="Vail" />


==Clones==
The Japanese engineers in Hamamatsu failed to create more than a handful of pleasing sounds for the GS1 with the 4-monitor programming machine, although one of them was used on the recording of "Africa" by Toto. At one point, Mr. John Chowning was invited to try to assist in creating new sounds with FM Synthesis. He came to the Yamaha R&D Studio, and spent a long time trying to make the FM theory result in a useful musical sound in practice. He gave up by the end of the week.


Synthesizer clones are unlicensed recreations of previous synthesizers, often marketed as affordable versions of famous musical equipment. Clones are available as physical instruments and software. Companies that have sold software clones include [[Arturia]] and [[Native Instruments]]. [[Behringer]] manufactures equipment modelled on instruments including the Minimoog, [[Pro-One]], and [[TB-303]], and [[drum machine]]s such as the [[TR-808]]. Other synthesizer clones include the MiniMOD (a series of [[Eurorack]] modules based on the Minimoog), the Intellijel Atlantis (based on the [[SH-101]]), and the x0x Heart (based on the TB-303).<ref name="Behringer">{{Cite news|url=https://www.factmag.com/2017/04/08/behringer-minimoog-synth-clones/|title=Attack of the clones: Is Behringer's Minimoog a synth replica too far?|last=Warwick|first=Oli|date=8 April 2017|work=[[Fact (UK magazine)|Fact]]|access-date=30 November 2018|language=en-US}}</ref>
Thereafter, a select group of prominent studio synthesists was hired by Yamaha to try to create the voice library for the GS1 (with that same programming tool). They included Gary Leuenberger (who at that time owned an acoustic piano outlet in San Francisco), and Bo Tomlyn (who later founded Key Clique, a third-party DX7 software manufacturer).


Creating clones of older hardware is legal where the [[patent]]s have expired.<ref name="Behringer" /> In 1997, [[Mackie]] lost their lawsuit against Behringer<ref>{{Cite book|url=https://books.google.com/books?id=iQ4EAAAAMBAJ&pg=PA34|title=Billboard|date=1997-07-05|publisher=Nielsen Business Media, Inc.|language=en}}</ref> as [[copyright law in the United States]] did not cover their [[circuit board]] designs.<ref name="Behringer" />
Between Gary and Bo (and a third programmer hired in the United Kingdom named David Bristow), they created the bulk of the voices for the GS1 and GS2 that really caught the attention of both musicians and musical instrument dealers in the Yamaha channel, through both NAMM (National Association of Music Merchants) demonstrations and in-store demonstrations. Yamaha reports indicated that only 16 GS-1's were ever produced, and they were all either showcase pieces or donated to Yamaha-sponsored artists, which included (in the U.S.) Stevie Wonder, Toto, Herbie Hancock, and Chick Corea. Despite the fact that it wasn't actually sold (in the U.S.), the GS-1 bore a retail price of about $16,000, and the GS-2 was priced around $8,000.


== See also ==
The CE20 and CE25 "combo ensembles" were sold in the home piano/organ channel in the U.S., but they were accepted to a limited extent in the "professional" music scene. Their sounds were programmed in Japan by some of the engineering staff members who had been working on the GS1 and GS2.
{{div col|colwidth=20em}}
;Lists
* [[List of synthesizers]]
* [[List of synthesizer manufacturers]]
;Various synthesizers
* [[Guitar synthesizer]]
* [[Keyboard bass]]
* [[Keytar]]
* [[Modular synthesizer]]
* [[Semi-modular synthesizer]]
* [[String synthesizer]]
* [[Wind controller]]


;Related instruments & technologies
The hardware-based FM "programmer" for the CE20/25 was a rack of breadboard electronics about the size of a telephone booth. The first DX7 print brochure distributed around the world included a picture of that programmer.
* [[3D sound synthesis]]
* [[Clavioline]] (Musitron)
* [[Electronic keyboard]]
* [[Musical instrument]]
* [[Music workstation]]
* [[Sampler (musical instrument)|Sampler]]
* [[Speech synthesis]]
** [[Vocaloid]]


;Components & technologies
At one time, a young Yamaha engineer was assigned the odious task of listening to real instrument recordings, and trying to emulate them with that crude FM synthesis programmer for the CE20/25's EPROM's. That particular engineer was supposedly "locked" in a laboratory for an extended period of time, but eventually failed to produce what the U.S. market thought of as good results in terms of viable synthesizer voices.
* [[Analytic signal]]
* [[Envelope detector]]
* [[Low-frequency oscillation]]
* [[MIDI]]


;Music genres
Despite his difficulties, there were a couple of notable recordings produced in the U.S. utilizing the CE20, including Al Jarreau's "Mornin'".
* [[Computer music]]
* [[Electronic music]]


;Notable works
Despite a lot of internal pressure from product management within the Yamaha International US division, and all that was going on at the time in terms of the adoption of the MIDI standard by many other companies in the industry, it was decided that the CE20 and CE25 did not need MIDI, since they were relegated to the "home" channel.
* ''[[List of compositions for electronic keyboard]]''
{{div col end}}


== References ==
While all of this was going on, the DX7 development team was working on what would be the most successful Yamaha professional keyboard to date at the Nippon Gakki headquarters in Hamamatsu.
=== Citations ===
{{Reflist}}


=== Sources ===
They called in the Yamaha International Corporation product managers from the U.S., and held a series of critical meetings in Hamamatsu to review their design concepts.
{{refbegin}}
* {{citation
| last = Borthwick
| first = Stuart
| year = 2004
| title = Popular Music Genres: An Introduction
| publisher = Edinburgh University Press
| page = 120
| isbn = 0-7486-1745-0
| url = https://books.google.com/books?id=r4bmVbNSnk4C&q=synthpop&pg=PA119
}}
* {{citation
|last = Holmes
|first = Thom
|year = 2008
|title = Electronic and experimental music: technology, music, and culture
|url = https://books.google.com/books?id=hCthQ-bec-QC
|edition = 3rd
|publisher = [[Taylor & Francis]]
|isbn = 978-0-415-95781-6
|access-date = 2011-06-04
}}
* {{citation
| last = Vail
| first = Mark
| year = 2000
| title = Vintage Synthesizers: Groundbreaking Instruments and Pioneering Designers of Electronic Music Synthesizers
| url = https://books.google.com/books?id=tNci9y0jlRgC
| publisher = Backbeat Books
| pages = 68–342
| isbn = 0-87930-603-3
}}{{Dead link|date=December 2023 |bot=InternetArchiveBot |fix-attempted=yes }}
{{refend}}


== Further reading ==
The Nippon Gakki engineering team was headed by "Karl" Hirano. At that time, many of the Japanese engineers who interfaced with US product managers adopted "American" nicknames. Hirano-san selected "Karl" because he liked Karl Malden (who at the time, was on the long-running television show, "Streets of San Francisco" with Michael Douglas.)
* {{cite book

| last = Crombie | first = David
Key to their design approach during the development stage(1981-82) was that, like the CE20 and CE25, the DX7 should be a "pre-set" synth, with only factory sounds, and no programming capability. Their rationale behind this was the extreme difficulty that the Yamaha team, Bo, Gary, and others had experienced at wielding FM synthesis and the multi-operator algorithms to make good sounds.
| year = 1986

| title = New Complete Synthesizer
Luckily, the American product management staff had their way: to make the DX7 (and the relatively unsuccessful DX9) completely programmable instruments. As a result, the DX7 was an unheralded success, literally hundreds of great sounds were created, and an entire industry surrounding 3rd-party sounds was spawned. Further, as mentioned previously, OEM chipsets in PCs with the FM synthesis engine became standard fare in that industry.
| publisher = Omnibus Press

|isbn = 0711907013
Many of the preset "General MIDI" sounds in Wintel PCs are exact-DNA clones of numerous sounds originally created by Bo, Gary, Dave Bristow, and a handful of other synthesists. Some even retain the same or similar names that were given them during the DX7 era.
}}

* {{cite book
When the DX7 was finally introduced in the U.S., Bo Tomlyn, Peter Rochon (from Yamaha Canada) and other Yamaha staff went on the road to show off the product to the North American Yamaha dealer network. Those seminars included what was thought then to be a key element....training the dealers in how to operate and program the DX7. This was a vivid indication that the concern raised in Hamamatsu over the difficulty level of programming the machine had still persisted.
| last = Gorges | first = Peter

| year = 2005
But, demand was so high for the DX7 the first year of introduction that a "grey market" influx of units originally purchased in Akihabara and other electronics outlets in Tokyo and other parts of Japan, quickly developed, and that became a serious concern for Yamaha International Corporation management.
| title = Programming Synthesizers

| publisher = Wizoobooks
A rumor was propagated by unknown people at Yamaha (or dealers) that the Japanese units would "blow up" upon being plugged into 120V AC outlets in the U.S., and that the sounds were different from the U.S. version. The latter "rumor" was true. The ROM cartridges included in the Japanese version of the DX7 '''were''' different from the American release....the U.S. version had many more of the pleasing sounds created by Bo Tomlyn and Gary Leuenberger.
| location = Germany, Bremen

| isbn = 978-3-934903-48-7
The DX7 exceeded Yamaha's wildest expectations in terms of unit sales; it took many months for production to catch up with demand. The DX9 failed, most prominently because it was a four-operator (vs six in the DX7) FM and had a cassette tape storage system for voice loading/recording.
}}

* {{cite book
The rack-mounted TX216 and TX816, although relatively powerful studio instruments at that time, were also poor sellers, due to lack of support and difficult user interface.
| last = Schmitz | first = Reinhard

| year = 2005
After the successful introduction of the DX series, Bo Tomlyn, along with Mike Malizola (the original DX-7 Yamaha product manager) and Chuck Monte (founder of Dyno-My-Piano), founded "Key Clique, Inc.", which sold thousands of ROM cartridges with new FM/DX7 sounds (programmed by Bo) to DX7 owners around the world. Ironically, Key Clique's "Rhodes-electric-piano" voices led to the relative demise of the Fender Rhodes piano, and even the business started by co-founder Monte (Dyno-My-Piano's principal product was a Rhodes modification kit). Later, however, Key Clique's strong dominance in that marketplace was eventually eroded by people "sharing" Tomlyn voice parameter settings over Bulletin Boards on early computers, and many competitors entered the market all at once.
| title = Analog Synthesis

| publisher = Wizoobooks
The final outcome was not far afield from what the Yamaha engineers had originally been concerned about....the huge library of sounds that propagated throughout the music industry for the FM instruments were actually created by only a handful of synth programmers. In numerous interviews and case studies conducted by Yamaha product management with both retail store owners and keyboardists, it was discovered that the average DX7 purchaser hardly ever wanted...or needed...to program his or her own synthesizer voices, since it was so difficult, and because there were so many great sounds available "off the shelf".
| location = Germany, Bremen

| isbn = 978-3-934903-01-2
At the time when the FM Synthesis technology was first licensed from Stanford University, just about everyone in management at both Nippon Gakki and Yamaha International in the U.S. thought that FM would be "long-gone" by the time the license ran out (about 1996). That turned out to be completely untrue - witness the flourishing of the technology in the OPL chipsets in the majority of PCs around the world over the past many years (as mentioned previously in this article).
}}

* {{cite book
The list of prominent musical recordings utilizing the DX7 and the myriad of other FM synthesizers that were introduced later is significant, and new compositions utilizing FM are added to the world music library all the time. Software emulation of the DX7 voice library (including many of the Key Clique sounds) exists today in a wide range of both profssional and 'pro-sumer' studio software products.
|last = Shapiro

|first = Peter
== PCM synthesis ==
|year = 2000
One kind of synthesizer starts with a binary digital recording of an existing sound. This is called a [[Pulse-code modulation|PCM]] sample, and is replayed at a range of pitches. Sample playback takes the place of the oscillator found in other synthesizers. The sound is (by most) still processed with synthesizer effects such as filters, LFOs, ring modulators and the like. Most [[music workstation]]s use this method of synthesis. Often, the pitch of the sample isn't changed, but it is simply played back at a faster speed. For example, in order to shift the frequency of a sound one octave higher, it simply needs to be played at double speed. Playing a sample at half speed causes it to be shifted down by one octave, and so on.
|title = Modulations: A History of Electronic Music: Throbbing Words on Sound

|isbn = 1-891024-06-X
By contrast, an instrument which primarily records and plays back samples is called a [[Sampler (musical instrument)|sampler]]. If a sample playback instrument neither records samples nor processes samples as a synthesizer, it is a [[rompler]].
|url = https://archive.org/details/modulationshisto00shap

|publisher = Caipirinha Productions, US
Because of the nature of digital sound storage (sound being measured in fractions of time), [[anti-aliasing]] and [[interpolation]] techniques (among others) have to be involved to get a natural sounding waveform as end result - especially if more than one note is being played, and/or if arbitrary tone intervals are used. The calculations on sample-data needs to be of great precision (for high quality, >32bits, more like 64bits at least) especially if a lot of different parameters are needed to make a specific sound: more than a few parameters, a lot of calculations need to be made, to avoid the rounding errors of the different calculations taking place.
}}

* {{cite book
PCM-sound is obtainable even with a 1-bit system, but the sound is terrible with mostly noise, as there are only two levels, on and off. Since the beginning of PCM synthesis (<1970), almost all number of bits from 1 to 32 have been used, but today the most common ones are 16 and 24bits, going towards 32bits as the next jump up in quality.
| last = Kuit | first = Roland

| year = 2014
== The physical modeling synthesizer ==
| title = SoundLab I: The Electronic Studio. Publisher's number: 13664
[[Physical modeling]] synthesis is the synthesis of sound by using a set of equations and algorithms to simulate a physical source of sound. When an initial set of parameters is run through the physical simulation, the simulated sound is generated.
| publisher = Donemus

| location = The Netherlands, The Hague
Although physical modeling was not a new concept in acoustics and synthesis, it wasn't until the development of the [[Karplus-Strong algorithm]], the subsequent refinement and generalization of the algorithm into [[digital waveguide synthesis]] by Julius O. Smith III and others, and the increase in DSP power in the late 1980s that commercial implementations became feasible.
}}

* {{cite book
Following the success of Yamaha's licensing of Stanford's FM synthesis patent, Yamaha signed a contract with Stanford University in [[1989]] to jointly develop digital waveguide synthesis. As such, most patents related to the technology are owned by Stanford or Yamaha. A physical modeling synthesizer was first realized commercially with Yamaha's VL-1, which was released in 1994.
| last = Kuit | first = Roland

| year = 2014
== The modern digital synthesizer ==
| title = SoundLab II: Architectures for Philosophers. Publisher's number: 13665
Most modern synthesizers are now completely [[digital]], including those which model analog synthesis using digital techniques. Digital synthesizers use [[digital signal processing]] (DSP) techniques to make musical sounds. Some digital synthesizers now exist in the form of '[[software synthesizer|softsynth]]' software that synthesizes sound using conventional PC hardware. Others use specialized DSP hardware.
| publisher = Donemus

| location = The Netherlands, The Hague
Digital synthesizers generate a digital sample, corresponding to a sound pressure, at a given sampling frequency (typically 44100 samples per second). In the most basic case, each digital oscillator is modeled by a counter. For each sample, the counter of each oscillator is advanced by an amount that varies depending on the frequency of the oscillator. For harmonic oscillators, the counter indexes a table containing the oscillator's waveform. For random-noise oscillators, the most significant bits index a table of random numbers. The values indexed by each oscillator's counter are mixed, processed, and then sent to a digital-to-analog converter, followed by an analog amplifier.
}}

* {{cite book
To eliminate the difficult multiplication step in the envelope generation and mixing, some synthesizers perform all of the above operations in a logarithmic coding, and add the current ADSR and mix levels to the logarithmic value of the oscillator, to effectively multiply it. To add the values in the last step of mixing, they are converted to linear values.
| last = Kuit | first = Roland

| year = 2014
== Software-only synthesis ==
| title = Laboratory of Patching: Illustrated Compendium of Modular Synthesis. Publisher's number: 13662
The earliest digital synthesis was performed by [[software synthesizer]]s on mainframe computers using methods exactly like those described in digital synthesis, above. Music was coded using punch cards to describe the type of instrument, note and duration. The formants of each timbre were generated as a series of sine waves, converted to fixed-point binary suitable for digital-to-analog converters, and mixed by adding and averaging. The data was written slowly to computer tape and then played back in real time to generate the music.
| publisher = Donemus

| location = The Netherlands, The Hague
Today, a variety of software is available to run on modern high-speed personal computers. DSP algorithms are commonplace, and permit the creation of fairly accurate simulations of physical acoustic sources or electronic sound generators (oscillators, filters, VCAs, etc). Some commercial programs offer quite lavish and complex models of classic synthesizers--everything from the Yamaha [[DX7]] to the original Moog modular. Other programs allow the user complete control of all aspects of digital music synthesis, at the cost of greater complexity and difficulty of use.
}}

* {{cite book
== Virtual Orchestra ==
| last = Kuit | first = Roland
A digital musical instrument, or musical network, capable of simulating the sonic and behavioral characteristics of a traditional acoustic orchestra in real time. The instrument often incorporates various synthesis and sound generating techniques. The [[Virtual Orchestra]] is demarcated from traditional keyboard-based synthesizers due to its live performance capabilities which include the ability to follow a conductor's tempo and respond to a variety of musical nuances in real time. The instrument's intelligence is achieved through sophisticated decision making algorithms that utilize knowledge and information from relevant areas of specialization including acoustics, psychoacoustics, music history, and music theory, for example.
| year = 2014

| title = To be On, to be OFF, that's the SWITCH. Publisher's number: 13666
== Commercial synthesizer manufacturers ==
| publisher = Donemus
Notable synthesizer manufacturers past and present include:
| location = The Netherlands, The Hague

}}
* [[Access Music]]
* [[Alesis]]
* [[ARP Instruments, Inc.|ARP]]
* [[Akai]]
* [[Buchla and Associates]]
* [[Casio]]
* [[Clavia]]
* [[Doepfer]]
* [[Electronic Music Studios (London) Ltd|Electronic Music Studios (EMS)]]
* [[E-mu]]
* [[Ensoniq]]
* [[Fairlight]]
* [[Generalmusic]]
* [[Hartmann Music]]
* [[Kawai]]
* [[Korg]]
* [[Kurzweil Music Systems]]
* [[Moog Music]]
* [[New England Digital]] (NED)
* [[Novation Electronic Music Systems|Novation]]
* [[Oberheim]]
* [[PAiA Electronics]]
* [[Palm Products GmbH]] (PPG)
* [[Realtime Music Solutions]] (RMS)
* [[Roland Corporation]]
* [[Sequential Circuits]]
* [[Technics]]
* [[Waldorf Music]]
* [[Yamaha Corporation|Yamaha]]
* Zadok Audio & Media Products' SAM-1
For a more complete list see [[:Category:Synthesizer manufacturers]]

== Classic synthesizer designs ==
''This is intended to be a list of classic instruments which marked a turning point in musical sound or style, potentially worth an article of their own. They are listed with the names of performers or styles associated with them. For more synthesizer models see [[:Category:Synthesizers]].''

* [[Alesis Andromeda]] (A synthesizer with modern digital control of fully analog sound producing circuitry)
* [[ARP 2600]] ([[The Who]], [[Stevie Wonder]], [[Weather Report]], [[Edgar Winter]], [[Jean-Michel Jarre]], [[New Order]])
* [[ARP Odyssey]] ([[Ultravox]] and their former frontman [[John Foxx]], [[Styx (band)|Styx]], [[Herbie Hancock]])
* [[Buchla|Buchla Music Box]] ([[Morton Subotnick]], [[Suzanne Ciani]])
* [[CZ-101|Casio CZ-101]] An early low-cost digital synthesizer ([[Vince Clarke]])
* [[Casio VL-1]] More famous for its drum beat than its synthesizer sounds Trio's Da Da Da.
* [[Clavia Nord Lead]] ([[God Lives Underwater]], [[Zoot Woman]], [[The Weathermen]], [[Jean Michel Jarre]], the first modern analog modelling synthesizer using digital circuitry to emulate analog circuits)
* [[VCS 3|EMS VCS3]] ([[Roxy Music]], [[Hawkwind]], [[Pink Floyd]], [[BBC Radiophonic Workshop]], [[Brian Eno]])
* [[E-mu Emulator]] ([[The Residents]], [[Depeche Mode]], [[Deep Purple]], [[Genesis (band)|Genesis]])
* [[Fairlight CMI]] ([[Jean-Michel Jarre]], [[Jan Hammer]], [[Peter Gabriel]], [[Mike Oldfield]], [[Pet Shop Boys]], [[The Art of Noise]], [[Kate Bush]])
* [[Neuron (synthesizer)|Hartmann Music Neuron]] ([[Hans Zimmer]], [[Peter Gabriel]], [[Guns 'n Roses]], [[Nikos Patrelakis]], [[David Sylvian]])
* [[Korg Karma]]
* [[Korg M1]] ([[Bradley Joseph]])
* [[Korg Triton]] ([[Bradley Joseph]], [[Derek Sherinian]]}
* [[Kurzweil K2000]] synthesizer with V.A.S.T system ([[Jean Michel Jarre]] )
* [[Lyricon]] First mass-produced wind synthesizer ([[Michael Brecker]], [[Tom Scott]], [[Chuck Greenberg]], [[Wayne Shorter]])
* [[Moog modular synthesizer]] ([[Rush (band)|Rush]] [pedals only], [[Wendy Carlos]], [[Tomita]], [[Tonto's Expanding Head Band]], [[Emerson, Lake and Palmer]], [[The Beatles]], [[Weezer]])
* [[Moog Taurus]] ([[Rush (band)|Rush]], [[Genesis (band)|Genesis]], [[The Police]], [[U2]], [[The Rentals]])
* [[Minimoog]] ([[Pink Floyd]], [[Rush (band)|Rush]], [[Yes (band)|Yes]], [[Emerson Lake and Palmer]], [[Stereolab]], [[Devo]], [[Ray Buttigieg]], [[George Duke]], [[Rick Wakeman]])
* [[Synclavier|NED Synclavier]] ([[Michael Jackson]], [[Stevie Wonder]], [[Laurie Anderson]], [[Frank Zappa]], [[Pat Metheny Group]])
* [[Oberheim OB-Xa]] ([[Rush (band)|Rush]], [[Prince (musician)|Prince]], [[Styx (band)|Styx]], [[Supertramp]], [[Van Halen]])
* [[PPG Wave]] ([[Rush (band)|Rush]], [[Depeche Mode]], [[The Fixx]], [[Thomas Dolby]])
* [[Roland D-50]] ([[Jean-Michel Jarre]], [[Enya]])
* [[Roland JD-800]] ([[Bradley Joseph]])
* [[Roland JP-8000]]
* [[Roland Jupiter-4]] ([[a-ha]],[[John Foxx]], [[Duran Duran]], [[The Human League]], [[Simple Minds]])
* [[Roland Jupiter-8]] ([[a-ha]],[[Rush (band)|Rush]], [[Duran Duran]], [[Orchestral Manoeuvres in the Dark|OMD]], [[Huey Lewis & the News]])
* [[Roland MT-32]] (de-facto standard in [[computer game]] music and effects)
* [[Roland TB-303]] ([[Techno (music)|Techno]], [[Acid House]])
* [[Sequential Circuits Prophet 5]] ([[Berlin (band)|Berlin]], [[Phil Collins]], [[The Cars]], [[Steve Winwood]])
* [[WaveFrame AudioFrame]] ([[Peter Gabriel]], [[Stevie Wonder]])
* [[Yamaha DX7]] ([[Rush (band)|Rush]], [[Steve Reich]], [[Depeche Mode]], [[Zoot Woman]], [[The Cure]], [[Brian Eno]], [[Howard Jones (musician)|Howard Jones]], [[Nitzer Ebb]])
* [[Yamaha CS-2]]
* [[Yamaha SHS-10]] One of the first "[[keytar]]s" from the 1980s ([[Showbread (band)]])

==See also==
* [[Analog electronics]]
* [[signal processing]]
* [[Computer music]]
* [[Fingerboard synthesizer]]
* [[Free audio software]]
* [[Electronic keyboard]]s
* [[Guitar/synthesizer]]
* [[Keytar]]
* [[Modular synthesizer]]
* [[New interfaces for musical expression]]
* [[Software synthesizer]]
* [[Sound effect]]s
* [[Sound module]]
* [[Speech encoding]]
* [[Vocoder]]
* [[Theremin]]
* [[Stylophone]]


== External links ==
==Source==
{{Wiktionary|synthesizer}}
*Shapiro, Peter (2000) ''Modulations: A History of Electronic Music: Throbbing Words on Sound'', ISBN 1-891024-06-X .
{{Commons category|Synthesizers}}
* [[b:Sound Synthesis Theory|Sound Synthesis Theory wikibook]]
* [http://www.acoustics.salford.ac.uk/acoustics_info/sound_synthesis/?content=index Principles of Sound Synthesis] {{Webarchive|url=https://web.archive.org/web/20160120080457/http://www.acoustics.salford.ac.uk/acoustics_info/sound_synthesis/?content=index |date=20 January 2016 }} at [[Salford University]]
* [https://sites.google.com/site/learning4synthesizer/home Synthesizer Tutorial] {{Webarchive|url=https://web.archive.org/web/20220611203717/https://sites.google.com/site/learning4synthesizer/home |date=11 June 2022 }}


{{Sound synthesis types}}
==External links==
{{Computer music}}
* [http://matrixsynth.blogspot.com Matrixsynth features thousands of posts on everything synth]
{{Electrophones}}
* [http://www.sonicstate.com Sonic State describing 3000 models of Synthesizers]
{{Musical keyboards}}
* [http://www.futureproducers.com/forums/forumdisplay/forumid/19 Synthesizer forum on FutureProducers.com (FP)]
{{Music technology}}
* [http://www.phinnweb.org/history/ The history of Electronic Music]
{{Chiptune-footer}}
* [http://www.obsolete.com/120_years/ 120 years of Electronic Music]
* [http://www.vintagesynth.org/ Vintage Synth Explorer]
* [http://www.synthmuseum.com/ Synthmuseum.com]
* [http://sonhors.free.fr/ SoNHoRS :: panorama des musiques électroniques]
* [http://www.synthtopia.com/ Synthtopia] features synthesizer and keyboard news
* [http://www.modularsynth.com/ Current listing of analog synthesizer manufacturers]
* [http://www.mtsu.edu/~dsmitche/rim419/midi/HTMLs/MIDHIS~1.HTM MIDI history]
* [http://arts.ucsc.edu/ems/music/equipment/synthesizers/analog/moog/Moog.html Using the Moog modular synthesizer]
* [http://www.bluedistortion.com/samples/ Sound samples from classic synthesizers like the Moog Modular]
* [http://www.synthfool.com/pics.html Picture archive of a large number of analog synthesizers, including Moog]
* [http://www.synthfool.com/broc.html Picture archive of brochures for a large number of classic analog synthesizers]
* [http://www.ruskeys.net/ Музей советских синтезаторов]: Russian synthesizer site
* [http://windsynth.org/home.html International Wind Synthesis Association]
* [http://www.jackdark.net/novuzeit.html NOVUZEIT - Software Synthesis]
* [http://www.retrosound.de/ Retrosound - Analog and Digital Synthesizers]
* [http://AmbientMusic-Radio.com/ Synth classics and new electronix, streamed 24/7, ambient space music internet radio]
* [http://www.acoustics.salford.ac.uk/acoustics_world/id/SoundSynthesis/SoundSynthesis.htm "Sound Synthesis", from Salford Acoustics]
* [http://swsoft.nsu.ru/~iivanov/ Application for software physical modelling - project "Sound Synthesis", Novosibirsk state university]
* [http://neuron.prosoniq.com/ A Sound Synthesis Method Based on Artificial Neural Networks and Wavelet Resynthesis]


{{Authority control}}
[[Category:Electronic music instruments]]
[[Category:Synthesizers|*]]


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Latest revision as of 16:07, 15 September 2024

Early Minimoog by R.A. Moog Inc. (c. 1970)

A synthesizer (also synthesiser,[1] or simply synth) is an electronic musical instrument that generates audio signals. Synthesizers typically create sounds by generating waveforms through methods including subtractive synthesis, additive synthesis and frequency modulation synthesis. These sounds may be altered by components such as filters, which cut or boost frequencies; envelopes, which control articulation, or how notes begin and end; and low-frequency oscillators, which modulate parameters such as pitch, volume, or filter characteristics affecting timbre. Synthesizers are typically played with keyboards or controlled by sequencers, software or other instruments, and may be synchronized to other equipment via MIDI.

Synthesizer-like instruments emerged in the United States in the mid-20th century with instruments such as the RCA Mark II, which was controlled with punch cards and used hundreds of vacuum tubes. The Moog synthesizer, developed by Robert Moog and first sold in 1964, is credited for pioneering concepts such as voltage-controlled oscillators, envelopes, noise generators, filters, and sequencers. In 1970, the smaller, cheaper Minimoog standardized synthesizers as self-contained instruments with built-in keyboards, unlike the larger modular synthesizers before it.

In 1978, Sequential Circuits released the Prophet-5, which used microprocessors to allow users to store sounds for the first time. MIDI, a standardized means of synchronizing electronic instruments, was introduced in 1982 and remains an industry standard. The Yamaha DX7, launched in 1983, was a major success and popularized digital synthesis. Software synthesizers now can be run as plug-ins or embedded on microchips. In the 21st century, analog synthesizers returned to popularity with the advent of cheaper manufacturing.

Synthesizers were initially viewed as avant-garde, valued by the 1960s psychedelic and countercultural scenes but with little perceived commercial potential. Switched-On Bach (1968), a bestselling album of Bach compositions arranged for synthesizer by Wendy Carlos, took synthesizers to the mainstream. They were adopted by electronic acts and pop and rock groups in the 1960s and 1970s and were widely used in 1980s music. Sampling, introduced with the Fairlight synthesizer in 1979, has influenced genres such as electronic and hip hop music. Today, the synthesizer is used in nearly every genre of music and is considered one of the most important instruments in the music industry. According to Fact in 2016, "The synthesizer is as important, and as ubiquitous, in modern music today as the human voice."[2]

History

[edit]

Precursors

[edit]

As electricity became more widely available, the early 20th century saw the invention of electronic musical instruments including the Telharmonium, Trautonium, Ondes Martenot, and theremin.[3] In the late 1930s, the Hammond Organ Company built the Novachord, a large instrument powered by 72 voltage-controlled amplifiers and 146 vacuum tubes.[4] In 1948, the Canadian engineer Hugh Le Caine completed the electronic sackbut, a precursor to voltage-controlled synthesizers, with keyboard sensitivity allowing for vibrato, glissando, and attack control.[3]

In 1957, Harry Olson and Herbert Belar completed the RCA Mark II Sound Synthesizer at the RCA laboratories in Princeton, New Jersey. The instrument read punched paper tape that controlled an analog synthesizer containing 750 vacuum tubes. It was acquired by the Columbia-Princeton Electronic Music Center and used almost exclusively by Milton Babbitt, a composer at Princeton University.[3]

1960s: Early years

[edit]
Robert Moog with Moog synthesizers. Many of Moog's inventions, such as voltage-controlled oscillators, became standard in synthesizers.

The authors of Analog Days define "the early years of the synthesizer" as between 1964 and the mid-1970s, beginning with the debut of the Moog synthesizer.[5]: 7  Designed by the American engineer Robert Moog, the instrument was a modular synthesizer system composed of numerous separate electronic modules, each capable of generating, shaping, or controlling a sound depending on how each module is connected to other modules by patch cables.[6] Moog developed a means of controlling pitch through voltage, the voltage-controlled oscillator.[7] This, along with Moog components such as envelopes, noise generators, filters, and sequencers, became standard components in synthesizers.[8][5]

Around the same period, the American engineer Don Buchla created the Buchla Modular Electronic Music System.[9] Instead of a conventional keyboard, Buchla's system used touchplates which transmitted control voltages depending on finger position and force.[5] However, the Moog's keyboard made it more accessible and marketable to musicians, and keyboards became the standard means of controlling synthesizers.[5] Moog and Buchla initially avoided the word synthesizer for their instruments, as it was associated with the RCA synthesizer; however, by the 1970s, it had become the standard term.[5]

1970s: Portability, polyphony and patch memory

[edit]

In 1970, Moog launched a cheaper, smaller synthesizer, the Minimoog.[10][11] It was the first synthesizer sold in music stores,[5] and was more practical for live performance. It standardized the concept of synthesizers as self-contained instruments with built-in keyboards.[12][13] In the early 1970s, the British composer Ken Freeman introduced the first string synthesizer, designed to emulate string sections.[14]

The Minimoog, introduced in 1970, was the first synthesizer sold in music stores.

After retail stores started selling synthesizers in 1971, other synthesizer companies were established, including ARP in the US and EMS in the UK.[5] ARP's products included the ARP 2600, which folded into a carrying case and had built-in speakers, and the Odyssey, a rival to the Minimoog.[5] The less expensive EMS synthesizers were used by European art rock and progressive rock acts including Brian Eno and Pink Floyd.[5] Designs for synthesizers appeared in the amateur electronics market, such as a design published in Practical Electronics in 1973.[1] By the mid-1970s, ARP was the world's largest synthesizer manufacturer,[5] though it closed in 1981.[15]

Early synthesizers were monophonic, meaning they could only play one note at a time. Some of the earliest commercial polyphonic synthesizers were created by the American engineer Tom Oberheim,[9] such as the OB-X (1979).[5] In 1978, the American company Sequential Circuits released the Prophet-5, the first fully programmable polyphonic synthesizer.[8]: 93  Whereas previous synthesizers required users to adjust cables and knobs to change sounds, with no guarantee of exactly recreating a sound,[5] the Prophet-5 used microprocessors to store sounds in patch memory.[16] This facilitated a move from synthesizers creating unpredictable sounds to producing "a standard package of familiar sounds".[5]: 385 

1980s: Digital technology

[edit]

The synthesizer market grew dramatically in the 1980s.[8]: 57  1982 saw the introduction of MIDI, a standardized means of synchronizing electronic instruments; it remains an industry standard.[17] An influential sampling synthesizer, the Fairlight CMI, was released in 1979,[16] with the ability to record and play back samples at different pitches.[18] Though its high price made it inaccessible to amateurs, it was adopted by high-profile pop musicians including Kate Bush and Peter Gabriel. The success of the Fairlight drove competition, improving sampling technology and lowering prices.[18] Early competing samplers included the E-mu Emulator in 1981[18] and the Akai S-series in 1985.[19]

The Yamaha DX7, released in 1983, was the first commercially successful digital synthesizer and was widely used in 1980s pop music.

In 1983, Yamaha released the first commercially successful digital synthesizer, the Yamaha DX7.[20] Based on frequency modulation (FM) synthesis developed by the Stanford University engineer John Chowning,[21] the DX7 was characterized by its "harsh", "glassy" and "chilly" sounds, compared to the "warm" and "fuzzy" sounds of analog synthesis.[2] The DX7 was the first synthesizer to sell more than 100,000 units[8]: 57 and remains one of the bestselling in history.[20][22] It was widely used in 1980s pop music.[23]

Digital synthesizers typically contained preset sounds emulating acoustic instruments, with algorithms controlled with menus and buttons.[5] The Synclavier, made with FM technology licensed from Yamaha, offered features such as 16-bit sampling and digital recording. With a starting price of $13,000, its use was limited to universities, studios and wealthy artists.[24][25] The Roland D-50 (1987) blended Roland's linear arithmetic algorithm with samples, and was the first mass-produced synthesizer with built-in digital effects such as delay, reverb and chorus.[8]: 63  In 1988, the Japanese manufacturer Korg released the M1, a digital synthesizer workstation featuring sampled transients and loops.[26] With more than 250,000 units sold, it remains the bestselling synthesizer in history.[26] The advent of digital synthesizers led to a downturn in interest in analog synthesizers in the following decade.[8]: 59 

1990s–present: Software synthesizers and analog revival

[edit]

1997 saw the release of ReBirth by Propellerhead Software and Reality by Seer Systems, the first software synthesizers that could be played in real time via MIDI.[8] In 1999, an update to the music software Cubase allowed users to run software instruments (including synthesizers) as plug-ins, triggering a wave of new software instruments.[27] Propellerhead's Reason, released in 2000, introduced an array of recognizable virtual studio equipment.[27]

The market for patchable and modular synthesizers rebounded in the late 1990s.[8]: 32  In the 2000s, older analog synthesizers regained popularity, sometimes selling for much more than their original prices.[28] In the 2010s, new, affordable analog synthesizers were introduced by companies including Moog, Korg, Arturia and Dave Smith Instruments. The renewed interest is credited to the appeal of imperfect "organic" sounds and simpler interfaces, and modern surface-mount technology making analog synthesizers cheaper and faster to manufacture.[28]

Impact

[edit]

Early synthesizers were viewed as avant-garde, valued by the 1960s psychedelic and counter-cultural scenes for their ability to make new sounds, but with little perceived commercial potential. Switched-On Bach (1968), a bestselling album of Bach compositions arranged for Moog synthesizer by Wendy Carlos, demonstrated that synthesizers could be more than "random noise machines",[6] taking them to the mainstream.[5] However, debates were held about the appropriateness of synthesizers in baroque music, and according to the Guardian they were quickly abandoned in "serious classical circles".[29]

Today, the synthesizer is one of the most important instruments in the music industry,[30] used in nearly every genre.[5]: 7  It is considered by the authors of Analog Days as "the only innovation that can stand alongside the electric guitar as a great new instrument of the age of electricity ... Both led to new forms of music, and both had massive popular appeal."[5]: 7  According to Fact in 2016, "The synthesizer is as important, and as ubiquitous, in modern music today as the human voice."[2]

Rock

[edit]
Keyboardist Keith Emerson performing with a Moog synthesizer in 1970

The Moog was adopted by 1960s rock acts including the Doors, the Grateful Dead, the Rolling Stones, the Beatles, and Keith Emerson.[31] Emerson was the first major rock musician to perform with the Moog and it became a trademark of his performances, helping take his band Emerson, Lake & Palmer to global stardom. According to Analog Days, the likes of Emerson, with his Moog performances, "did for the keyboard what Jimi Hendrix did for the guitar".[5]: 200  String synthesizers were used by 1970s progressive rock bands including Camel, Caravan, Electric Light Orchestra, Gentle Giant and Renaissance.[14]

The portable Minimoog (1970), much smaller than the modular synthesizers before it, made synthesizers more common in live performance.[13] Early synthesizers could only play one note at a time, making them suitable for basslines, leads and solos.[32] With the rise of polyphonic synthesizers in the 70s and 80s, "the keyboard in rock once more started to revert to the background, to be used for fills and atmosphere rather than for soloing".[5]: 207  Some acts felt that using synthesizers was "cheating"; Queen wrote in their album liner notes that they did not use them.[33]

African-American music

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The Minimoog took a place in mainstream African-American music, most notably in the work of Stevie Wonder,[5] and in jazz, such as the work of Sun Ra.[32] In the late 1970s and the early 1980s, the Minimoog was widely used in the emerging disco genre by artists including Abba and Giorgio Moroder.[32] Sampling, introduced with the Fairlight synthesizer in 1979, has influenced all genres of music[7] and had a major influence on the development of electronic and hip hop music.[34][35]

Electronic music

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In the 1970s, electronic music composers such as Jean Michel Jarre[36] and Isao Tomita[37][38][39] released successful synthesizer-led instrumental albums. This influenced the emergence of synth-pop from the late 1970s to the early 1980s. The work of German krautrock bands such as Kraftwerk[40] and Tangerine Dream, British acts such as John Foxx, Gary Numan and David Bowie, African-American acts such as George Clinton and Zapp, and Japanese electronic acts such as Yellow Magic Orchestra and Kitaro were influential in the development of the genre.[30]

The Roland TB-303 (1981), in conjunction with the Roland TR-808 and TR-909 drum machines, became a foundation of electronic dance music genres such as house and techno when producers acquired cheap second-hand units later in the decade.[41] The authors of Analog Days connect the synthesizer's origins in 1960s psychedelia to the raves and British "second summer of love" of the 1980s and the club scenes of the 1990s and 2000s.[5]: 321 

Pop

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Gary Numan's 1979 hits "Are 'Friends' Electric?" and "Cars" made heavy use of synthesizers.[42][43] OMD's "Enola Gay" (1980) used distinctive electronic percussion and a synthesized melody. Soft Cell used a synthesized melody on their 1981 hit "Tainted Love".[30] Nick Rhodes, keyboardist of Duran Duran, used synthesizers including the Roland Jupiter-4 and Jupiter-8.[44] Chart hits include Depeche Mode's "Just Can't Get Enough" (1981),[30] the Human League's "Don't You Want Me"[45] and works by Ultravox.[30]

In the 1980s, digital synthesizers were widely used in pop music.[23] The Yamaha DX7, released in 1983, became a pop staple, used on songs by A-ha, Kenny Loggins, Kool & the Gang.[2] Its "E PIANO 1" preset became particularly famous,[2] especially for power ballads,[46] and was used by artists including Whitney Houston, Chicago,[46] Prince,[23] Phil Collins, Luther Vandross, Billy Ocean,[2] and Celine Dion.[47] Korg M1 presets were widely used in 1990s house music, beginning with Madonna's 1990 single "Vogue".[48]

Film and television

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Synthesizers are common in film and television soundtracks.[5]: 273  In 1969, Mort Garson used a Moog to compose a soundtrack for the televised footage of the Apollo 11 moonwalk, creating a link between electronic music and space in the American popular imagination.[49] ARP synthesizers were used to create sound effects for the 1977 science fiction films Close Encounters of the Third Kind[5]: 9  and Star Wars, including the "voice" of the robot R2-D2.[5]: 273 

In the 70s and 80s, synthesizers were used in the scores for thrillers and horror films including A Clockwork Orange (1971), Apocalypse Now (1979), The Fog (1980) and Manhunter (1986). Brad Fiedel used a Prophet synthesizer to record the soundtrack for The Terminator (1984),[50] and the filmmaker John Carpenter used them extensively for his soundtracks.[51] Synthesizers were used to create themes for television shows including Knight Rider (1982), Twin Peaks (1990) and Stranger Things (2016).[52]

Jobs

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The rise of the synthesizer led to major changes in music industry jobs, comparable to the earlier arrival of sound in film, which put live musicians accompanying silent films out of work.[53] With its ability to imitate instruments such as strings and horns, the synthesizer threatened the jobs of session musicians. For a period, the Moog was banned from use in commercial work, a restriction negotiated by the American Federation of Musicians (AFM).[5] Robert Moog felt that the AFM had not realized that his instrument had to be studied like any other, and instead imagined that "all the sounds that musicians could make somehow existed in the Moog — all you had to do was push a button that said 'Jascha Heifetz' and out would come the most fantastic violin player".[54]

The musician Walter Sear persuaded the AFM that the synthesizer demanded skill, and the category of "synthesizer player" was accepted into the union/ However, players were subject to "suspicion and hostility" for years.[5]: 149  In 1982, following a tour by Barry Manilow using synthesizers instead of an orchestra, the British Musicians' Union attempted to ban synthesizers, attracting controversy.[55] That decade, a few musicians skilled at programming the Yamaha DX7 found employment creating sounds for other acts.[56]

Sound synthesis

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In subtractive synthesis, complex waveforms are generated by oscillators and then shaped with filters to remove or boost specific frequencies.

Synthesizers generate audio through various forms of analog and digital synthesis.

Components

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Oscillators

[edit]

Oscillators produce waveforms (such as sawtooth, sine, or pulse waves) with different timbres.[8]

Voltage-controlled amplifiers

[edit]

Voltage-controlled amplifiers (VCAs) control the volume or gain of the audio signal. VCAs can be modulated by other components, such as LFOs and envelopes.[8] A VCA is a preamp that boosts (amplifies) the electronic signal before passing it on to an external or built-in power amplifier, as well as a means to control its amplitude (volume) using an attenuator. The gain of the VCA is affected by a control voltage (CV), coming from an envelope generator, an LFO, the keyboard or some other source.[66]

Filters

[edit]
Various filter modes.

Voltage-controlled filters (VCFs) "shape" the sound generated by the oscillators in the frequency domain, often under the control of an envelope or LFO. These are essential to subtractive synthesis. Filters are particularly important in subtractive synthesis, being designed to pass some frequency regions (or "bands") through unattenuated while significantly attenuating ("subtracting") others. The low-pass filter is most frequently used, but band-pass filters, band-reject filters and high-pass filters are also sometimes available.[citation needed]

The filter may be controlled with a second ADSR envelope. An "envelope modulation" ("env mod") parameter on many synthesizers with filter envelopes determines how much the envelope affects the filter. If turned all the way down, the filter produces a flat sound with no envelope. When turned up the envelope becomes more noticeable, expanding the minimum and maximum range of the filter. The envelope applied on the filter helps the sound designer generating long notes or short notes by moving the parameters up and down such as decay, sustain and finally release. For instance by using a short decay with no sustain, the sound generated is commonly known as a stab. Sound designers may prefer shaping the sound with a filter instead of volume.[citation needed]

Envelopes

[edit]
Schematic of ADSR

Envelopes control how sounds change over time. They may control parameters such as amplitude (volume), filters (frequencies), or pitch. The most common envelope is the ADSR (attack, decay, sustain, release) envelope:[8]

  • Attack is the time taken for initial run-up of level from nil to peak, beginning when the note is triggered.
  • Decay is the time taken for the subsequent run down from the attack level to the designated sustain level.
  • Sustain is the level during the main sequence of the sound's duration, until the key is released.
  • Release is the time taken for the level to decay from the sustain level to zero after the key is released.

Low-frequency oscillators

[edit]

Low-frequency oscillators (LFOs) produce waveforms used to modulate parameters, such as the pitch of oscillators (producing vibrato).[8]

Arpeggiators

[edit]

Arpeggiators, included in many synthesizer models, take input chords and convert them into arpeggios. They usually include controls for speed, range and mode (the movement of the arpeggio).[67]

Controllers

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Synthesizers are often controlled with electronic or digital keyboards or MIDI controller keyboards, which may be built into the synthesizer unit or attached via connections such as CV/gate, USB, or MIDI.[8] Keyboards may offer expression such as velocity sensitivity and aftertouch, allowing for more control over the sound.[8] Other controllers include ribbon controllers, which track the movement of the finger across a touch-sensitive surface; wind controllers, played similarly to woodwind instruments; motion-sensitive controllers similar to video game motion controllers; electronic drum pads, played similarly to the heads of a drum kit; touchplates, which send signals depending on finger position and force; controllers designed for microtonal tunings;[8] touchscreen devices such as tablets and smartphones;[8] and fingerpads.[8]

Clones

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Synthesizer clones are unlicensed recreations of previous synthesizers, often marketed as affordable versions of famous musical equipment. Clones are available as physical instruments and software. Companies that have sold software clones include Arturia and Native Instruments. Behringer manufactures equipment modelled on instruments including the Minimoog, Pro-One, and TB-303, and drum machines such as the TR-808. Other synthesizer clones include the MiniMOD (a series of Eurorack modules based on the Minimoog), the Intellijel Atlantis (based on the SH-101), and the x0x Heart (based on the TB-303).[68]

Creating clones of older hardware is legal where the patents have expired.[68] In 1997, Mackie lost their lawsuit against Behringer[69] as copyright law in the United States did not cover their circuit board designs.[68]

See also

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References

[edit]

Citations

[edit]
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  2. ^ a b c d e f g Twells, John (15 September 2016). "The 14 most important synths in electronic music history – and the musicians who use them". Fact. Retrieved 4 March 2024.
  3. ^ a b c Chadabe, Joel (14 September 2011). "The Electronic Century Part I: Beginnings". Electronic Musician. Archived from the original on 14 September 2011. Retrieved 12 November 2019.
  4. ^ Stewart, Dave (October 2010). "Soniccouture Novachord". Sound on Sound. Retrieved 19 June 2021.
  5. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z Pinch, Trevor; Trocco, Frank (2004). Analog Days: The Invention and Impact of the Moog Synthesizer. Harvard University Press. ISBN 978-0-674-01617-0.
  6. ^ a b Kozinn, Allan (23 August 2005). "Robert Moog, Creator of Music Synthesizer, Dies at 71". The New York Times. Retrieved 3 December 2018.
  7. ^ a b McNamee, David (2 August 2010). "Hey, what's that sound: Moog synthesisers". The Guardian. Retrieved 8 January 2020.
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  39. ^ "Snowflakes Are Dancing". Billboard. Retrieved 28 May 2011.
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  41. ^ Beaumont-Thomas, Ben (14 February 2014). "Roland launch new versions of the iconic 808, 909 and 303 instruments". The Guardian. ISSN 0261-3077. Retrieved 2 November 2019.
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  46. ^ a b Simpson, Dave (14 August 2018). "More synthetic bamboo! The greatest preset sounds in pop music". The Guardian. Retrieved 19 October 2018.
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  50. ^ Stevenson, Seth (26 February 2014). "What Is the Time Signature of the Ominous Electronic Score of The Terminator?". Slate. ISSN 1091-2339. Retrieved 9 February 2023.
  51. ^ Paul Tingen. "John Carpenter - Film Director & Composer". Sound on Sound. No. July 2016.
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  53. ^ From Stage to Studio: Musicians and the Sound Revolution, 1890–1950 (Baltimore: Johns Hopkins University Press, 1996).
  54. ^ Interview with Bob Moog, Plug, Fall 1974, p.2.
  55. ^ "1981–1990 – The Musicians' Union: A History (1893–2013)". www.muhistory.com.
  56. ^ Roger T. Dean, ed. (16 September 2009). The Oxford Handbook of Computer Music. Oxford University Press. p. 81. ISBN 9780199887132.
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  63. ^ "Q. Can you explain the origins of wavetable, S&S and vector synthesis?". Sound on Sound. Retrieved 20 January 2021.
  64. ^ Price, Simon (December 2005). "Granular Synthesis". Sound on Sound. Retrieved 28 May 2021.
  65. ^ "Yamaha VL1". Sound On Sound. July 1994. Archived from the original on 8 June 2015.
  66. ^ Reid, Gordon (2000). "Synth Secrets, Part 9: An Introduction to VCAs". Sound on Sound (January 2000). Archived from the original on 4 April 2016. Retrieved 25 May 2010.{{cite journal}}: CS1 maint: bot: original URL status unknown (link)
  67. ^ Aisher, Bruce (1 February 2013). "An introduction to arpeggiators". Attack Magazine. Retrieved 16 December 2021.
  68. ^ a b c Warwick, Oli (8 April 2017). "Attack of the clones: Is Behringer's Minimoog a synth replica too far?". Fact. Retrieved 30 November 2018.
  69. ^ Billboard. Nielsen Business Media, Inc. 5 July 1997.

Sources

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Further reading

[edit]
  • Crombie, David (1986). New Complete Synthesizer. Omnibus Press. ISBN 0711907013.
  • Gorges, Peter (2005). Programming Synthesizers. Germany, Bremen: Wizoobooks. ISBN 978-3-934903-48-7.
  • Schmitz, Reinhard (2005). Analog Synthesis. Germany, Bremen: Wizoobooks. ISBN 978-3-934903-01-2.
  • Shapiro, Peter (2000). Modulations: A History of Electronic Music: Throbbing Words on Sound. Caipirinha Productions, US. ISBN 1-891024-06-X.
  • Kuit, Roland (2014). SoundLab I: The Electronic Studio. Publisher's number: 13664. The Netherlands, The Hague: Donemus.
  • Kuit, Roland (2014). SoundLab II: Architectures for Philosophers. Publisher's number: 13665. The Netherlands, The Hague: Donemus.
  • Kuit, Roland (2014). Laboratory of Patching: Illustrated Compendium of Modular Synthesis. Publisher's number: 13662. The Netherlands, The Hague: Donemus.
  • Kuit, Roland (2014). To be On, to be OFF, that's the SWITCH. Publisher's number: 13666. The Netherlands, The Hague: Donemus.
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