Ready.
Common
Channel frequency number.
Octave-like block value.
OP1
Detune.
Frequency multiplier.
Loudness or FM depth.
Attack rate.
First decay.
How fast the level keeps falling in the later stage.
The target level for that later stage.
Release rate.
About this demo
This page keeps the setup small: one audible operator, three muted operators, and a few parameters you can change without reading the whole FM algorithm story first.
YM2612 operators use a fixed sine-based waveform. This demo changes the operator settings, not a selectable oscillator shape.