Analysis of information sources in references of the Wikipedia article "Yamaha DX7" in English language version.
In 1967, John Chowning, at Stanford University, accidentally discovered frequency modulation (FM) synthesis when experimenting with extreme vibrato effects in MUSIC-V. ... By 1971 he was able to use FM synthesis to synthesizer musical instrument sounds, and this technique was later used to create the Yamaha DX synthesizer, the first commercially successful digital synthesizer, in the early 1980s.
By the time the first commercially successful digital instrument, the Yamaha DX7 (lifetime sales of two hundred thousand), appeared in 1983 ...(Note: the above sales number seems about whole DX series)
By the time the first commercially successful digital instrument, the Yamaha DX7 (lifetime sales of two hundred thousand), appeared in 1983 ...(Note: the above sales number seems about whole DX series)
{{cite web}}: CS1 maint: numeric names: authors list (link)By the time the first commercially successful digital instrument, the Yamaha DX7 (lifetime sales of two hundred thousand), appeared in 1983 ...(Note: the above sales number seems about whole DX series)
At that time, a number of Yamaha departments were developing different instruments in parallel, ... the direct forerunner of the DX Series synths was a test model known as the Programmable Algorithm Music Synthesizer (PAMS). In recognition of this fact, the DX7 is identified as a Digital Programmable Algorithm Synthesizer on its top panel. / As its name suggests, the PAMS created sound based on various calculation algorithms—namely, phase modulation, amplitude modulation, additive synthesis, and frequency modulation (FM)—and from the very start, the prototype supported the storing of programs in memory. However, this high level of freedom in sound design came at the price of a huge increase in the number of parameters required, meaning that the PAMS was not yet suitable for commercialization as an instrument that the average user could program. / In order to resolve this issue, the Yamaha developers decided to simplify the synth's tone generator design by having the modulator and carrier envelope generators share common parameters. They also reduced the number of algorithms—or operator combination patterns—to 32.
At that time, a number of Yamaha departments were developing different instruments in parallel, ... the direct forerunner of the DX Series synths was a test model known as the Programmable Algorithm Music Synthesizer (PAMS). In recognition of this fact, the DX7 is identified as a Digital Programmable Algorithm Synthesizer on its top panel. / As its name suggests, the PAMS created sound based on various calculation algorithms—namely, phase modulation, amplitude modulation, additive synthesis, and frequency modulation (FM)—and from the very start, the prototype supported the storing of programs in memory. However, this high level of freedom in sound design came at the price of a huge increase in the number of parameters required, meaning that the PAMS was not yet suitable for commercialization as an instrument that the average user could program. / In order to resolve this issue, the Yamaha developers decided to simplify the synth's tone generator design by having the modulator and carrier envelope generators share common parameters. They also reduced the number of algorithms—or operator combination patterns—to 32.