Originally developed by John Chowning of Stanford University, and later popularized by Yamaha's FM7 synthesizer, FM synthesis is a method of sound generation where a sine wave is modulated by one or more sine Wavesto produced a large variety of waveforms. Later incarnations of the process used many other types of waveforms for the carrier and modulators, producing an even wider palette of sounds. Know primarily for the pure bell-like and electronic piano tones