Wavefolding

A waveshaping method that “folds” a waveform back on itself once it exceeds a threshold, instead of clipping it flat. Where saturation/clipping flattens peaks, a wavefolder reflects them inward, adding harmonics that grow richer as the input drives harder — the West-Coast-synthesis (Buchla/Serge) alternative to subtractive filtering, generating brightness by adding harmonic content rather than carving it away.

Why it matters here

It’s a new node on the spoke’s synthesis-method axis, alongside FM, additive, granular, and subtractive. Its first instance here is Xnullx‘s Foldspace, which pairs wavefolding with phase modulation (close kin to FM — modulating a carrier’s phase rather than frequency) over a 3-point folder. Foldspace can take external audio or run an internal carrier oscillator with pitch-tracking and MIDI input, so like double-freak it sits on the effect↔instrument boundary — a folder is a processor when fed audio and a sound source when driven by its own oscillator. That both wavefolding and phase modulation arrive together, in one plugin, is a small reminder that these “methods” are combinable rather than exclusive.

Related

fm-synthesis · granular-synthesis · additive-synthesis · synthesizer · xnullx-five-free-plugins · double-freak