fmsynth

Fmsynth — 4-operator FM synth. algorithm 0–7 / op1–op4: { ratio, index, decay } / gain.

Quick Start

fmsynth({ algorithm: 0, gain: 0.5 })

Parameters

Name	Type	Default	Range/Options	Description
algorithm	enum	0	0 1 2 3 4 5 6 7	FM algorithm (0 = serial chain / bell, 7 = additive)
wave	enum	sine	sine square sawtooth triangle	Carrier waveform
baseFreq	number	—	1–20000 Hz	Carrier base frequency. When set, overrides the per-note pitch from play()
op1	string	—	—	Operator 1 (primary carrier): { ratio, index, decay } — index supports LfoSpec
op2	string	—	—	Operator 2: { ratio, index, decay } — index supports LfoSpec
op3	string	—	—	Operator 3: { ratio, index, decay } — index supports LfoSpec
op4	string	—	—	Operator 4: { ratio, index, decay } — index supports LfoSpec
attack	number	0.005	0–10 s	Attack time
decay	number	0.3	0–10 s	Decay time
sustain	number	0.5	0–1 0–1	Sustain level (0 = percussive mode)
release	number	0.2	0–10 s	Release time
pitchMult	number	1	1–10	Pitch sweep start multiplier (1.0 = no sweep)
pitchDecay	number	0.05	0–1 s	Pitch sweep time
gain	number	0.5	0–1 0–1	Output gain