fm-synthesizers.js

press a key to start
MODULATORSop1 · op3
sine · ratio × pitch
──▶
CARRIERSop2 · op4
algorithm · mod1 / mod2 / stack2 / feedback
──▶
VCAgain
──▶
FXchorus ▸ delay ▸ reverb
──▶
OUTlimiter
▲ index → modulator depth  ▲ velocity → index
▲ op1..op4 envs → operator level  ▲ feedback → op1 self-modulation
audio path — carries sound modulation — shapes it, never heard effects how notes get in

1 · Operators

Op 1

modulator · drives op2 (or itself in feedback)

Op 2

carrier · the operator you actually hear

Op 3

modulator · the 2nd voice in mod2 and stack2

Op 4

carrier · the 2nd pair in stack2

2 · Algorithm

Algorithm

how the four operators connect — which modulate, which carry

Mod index

how hard the modulators push the carrier — the drive of FM

Output

final level before the FX send chain

3 · Effects

Chorus

Delay

Reverb

4 · Playing

Arpeggiator

holds a chord and plays it as notes — lives in this demo, not in the library

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