Filter

Audio

Multi-mode audio filter with 14 filter types and keytracking.

Biquad-based filter supporting LP12, LP24, HP12, HP24, BP, BP24, Notch, Peak, Allpass, Comb, Ladder, Formant, Diode, and MS-20 modes. Keytracking shifts cutoff based on incoming note frequency for polyphonic chains.

Source operators/audio/filter/filter.cpp

Tips

Use Comb mode with short delay times for Karplus-Strong-like string sounds.

Parameters

Name	Type	Range	Default	Description
mode				Filter algorithm. Each mode has a distinct character.
keytrack				Scales cutoff with note frequency. 1 = full tracking.

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