Jacques Dudon is a French just intonation composer and instrument builder. He is best known for developing a series of photosonic disk instruments that produced sound from modulated light.The production of synthetic sound in this manner has been used in optosonic instruments. Dudon's method is notable for the generation of tone which is produced by the overlapping of two or three discs, and the opportunities this design provides for timbral shifts by slowing one or more discs manually, thereby altering the waveform.