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FM Tone Generation
Before actually editing the PLG100-DX voices, let’s get an idea of how the FM tone generator is
put together.
Operators
In the PLG100-DX, there are six special devices called “operators” that generate sine
waves. These six operators are combined in various ways to make up the different voices
produced by the PLG100-DX. The operators have the following two functions:
(1) They can freely change the frequency (pitch) of the generated sine wave.
(2) They can freely change the amplitude (volume or output level) of the generated
sine wave.
A sine wave is the fundamental wave of a note, with absolutely no overtones added.
Command
Operator
The frequency of
the sine wave is
changed.
Command
Operator
The amplitude
of the sine wave
is changed.