FM0

FM0 is a 16-voice, four-operator FM synthesizer built into MAGDA. Every operator can phase-modulate any operator through a full 4x4 modulation matrix, including self-feedback on the diagonal. Each operator has its own ratio, level, and waveform, feeding a shared amplitude ADSR.

Modulation matrix

The 4x4 matrix routes operator outputs into operator phase inputs. Rows are sources, columns are destinations, so cell M2>1 is "operator 2 modulates operator 1". The diagonal cells (M1>1, M2>2, M3>3, M4>4) are self-feedback.

Parameter	Range	Default	Description
M1>1 ... M4>4	0 to 8	0 (M2>1 = 2)	Modulation amount for each matrix cell

A default patch has operator 2 modulating operator 1, the classic two-operator FM voice. Raise the diagonal for brighter, more aggressive timbres.

Operators

Each of the four operators has these controls.

Parameter	Range	Default	Description
Ratio	0.25 to 16	1 (Op2 = 2)	Frequency ratio, a multiple of the played note
Level	-60 to 6 dB	0 (Op2-4 = -60)	Operator output level
Wave	Sine / Tri / Saw / Square / Noise	Sine	Operator waveform

Each operator also has an Enable toggle (on by default; disabling stops it both sounding and modulating) and a Reset toggle that resets its phase on note-on.

Amp, voice, and velocity

Parameter	Range	Default	Description
Amp Attack	1 to 2000 ms	5	ADSR attack
Amp Decay	1 to 2000 ms	300	ADSR decay
Amp Sustain	0 to 1	0.5	Sustain level
Amp Release	1 to 4000 ms	400	ADSR release
Glide	0 to 2000 ms	0	Portamento (mono only; poly forces 0)
Vel Amount	0 to 1	1	Velocity sensitivity depth

Macros, modulation, and presets

FM0 sits in the standard device slot, so its parameters accept macros and modulators, and patches save and recall through the preset system.

AI sound design

Click the AI icon in the device header and describe the sound you want. The agent reads this device's own parameters and their real-world ranges, then writes values into them. See Per-Device AI Panel.