CHAOTIC SYNTHS · AM

Chaotic AM

nested amplitude · continuous nonlinear shaping

Preset guide

Forty Fold

A 188 Hz carrier holds its pitch while nested 40 and 25 Hz modulators make a firm, rippling flutter.

About these AM variations

Twelve scenes explore pulses, flutter and metallic sidebands. Nested modulators shape the carrier’s amplitude. Carrier pitch stays independent of recursion depth and frequency division.

Performance

Drone · continuous

Note— Bend+0 st Sustainup Expression 100% Waiting for MIDI

Glide mode

Glide timeoff Root noteC4 · 60 Pitch-bend range±2 st

Controller macros · 1 Depth · 2 Mod frequency · 3 AM depth · 4 Chaos / shape · 5 Attack · 6 Release · 7 Glide · 8 Output. Standard MIDI · CC5 glide · CC11 expression · CC64 sustain · CC65 portamento · CC72 release · CC73 attack · CC75 decay · CC120/121/123 panic and reset.

Algorithm

2 modulators · carrier 188 Hz

Transfer

Recursion depth2 Carrier pitch188 Hz Logarithmic · 40 Hz to 2 kHz · audible carrier Modulator rate40 Hz Logarithmic · 0.5 Hz to 2.4 kHz · slow pulses to sidebands Frequency divisor÷1.6 AM depth86.9% Controls the carrier’s amplitude movement from 0 to 98.5%. Depth divisor÷1.25 Divisors shape the nested modulators; carrier pitch stays fixed. Chaos / shape0.512 Smooth rounds the modulating signal; Saturated creates sharper amplitude shapes.

Carrier188 Hz sine Modulator40 Hz · index 6.66 · 86.9% AM Nested rates40 Hz → 25 Hz Transfercontinuous tanh control · k 5.096 Outputcarrier · 188 Hz · normalized Ceiling20 kHz

Carrier pitch sets the audible tone. Slow modulators create pulses; faster modulators create sidebands. Recursion nests their amplitude shapes, and Chaos changes those shapes. Zero AM depth leaves a pure carrier sine.

Family

FM / PM / AM · linear / shaped

Recursive FM

Linear signal → frequency. Each sine drives the next oscillator’s rate.

Recursive PM

Linear signal → phase. Each sine displaces the next oscillator’s phase.

Chaotic FM

Tanh signal → signed frequency. The nonlinear signal sets the next rate.

Chaotic AM

Nested, tanh-shaped modulators control a positive gain on one audible carrier.

DSP reference

algorithm + audio path