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FM Tone Generation
Appendix
FM Tone Generation
Before actually editing the DX200 voices, let's get an idea of how the FM tone generator
works.
In the DX200, there are six special devices called “operators” that generate sine waves. A sine wave is the
fundamental wave of a note, with absolutely no overtones or harmonics added. These six operators are com-
bined in various ways to make up the different voices produced by the DX200. The operators can be used to
freely change two different aspects of the sound:
(1) The frequency (pitch) of the generated sine wave.
(2) The amplitude (volume or output level) of the generated sine wave.
FILTER
NOISE GENERATOR
DISTORTION
EQ
MIXER
LFO
PEG
FM Operators
FM
Operators
The frequency of the
sine wave is changed.
The amplitude of the
sine wave is changed.
This results in the pitch
becoming higher or
lower.
This results in the volume
becoming higher or lower.
Operator
Operator