Oral history of John Chowning, inventor of FM synthesis [video]
An oral history video features John Chowning discussing his invention of frequency modulation synthesis at Stanford and its commercialization by Yamaha.
summary is enough The linked video lacks transcript text, but the comment thread offers fascinating technical nuances and historical anecdotes about early synthesizers.
summary
An oral history video captures John Chowning discussing the development of FM synthesis, which he initially approached from a computer science perspective rather than a musical one. He licensed the technology to Yamaha, paving the way for iconic instruments like the DX7 that dominated 1980s music. Commenters expand on this history by discussing the technical distinction between frequency and phase modulation, early Japanese manufacturing, and personal encounters with Chowning.
key points
- John Chowning developed FM synthesis at Stanford University driven largely by computer science and engineering curiosity.
- Licensing the patent to Yamaha enabled the creation of the DX7, which defined the sound of 1980s pop music.
- Commenters note that digital implementations of FM synthesis are technically a form of phase modulation.
who should read it
Synthesizer enthusiasts, electronic music historians, and audio engineers interested in the roots of digital sound synthesis.
discussion warm
consensus
Commenters fondly share personal anecdotes about meeting Chowning, praise the massive impact of the Yamaha DX7, and dive into technical debates about phase versus frequency modulation.
pushback
A few commenters note surprise that a monumental contribution to music was created by someone initially uninterested in music composition.
The name FM always bothered me. You're not modulating the frequency, you're modulating the phase. PM would be a better name.
If you were to modulate frequency, well first of all you'd have to define a reference point or you'd just get glitchy sound. In practice that means most FM implementations just have a highly oversampled single cycle of a sine wave in memory, and it's the speed at which the sample pointer consumes the looping sine that's set to correspond to some frequency, and then that value is modulated. In other words, phase modulation.
Clarifies that digital FM implementations are actually phase modulation because they modulate the playback speed of a looping sine wave.
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