Purpose

Filter shapes the tone of a signal by cutting or passing frequencies around a cutoff. It offers lowpass, bandpass, highpass, and notch responses with resonance, suitable for tone shaping and filter sweeps.

Use

Insert it inline on any source. Wire audio into in and out onward. Pick a Mode, set Cutoff to the corner frequency, and add Resonance for emphasis at the cutoff. Drive Cutoff from a CHOP or control source for sweeps.

Inputs and outputs

• Input 0: in accepts mono or stereo PCM. It is required.
• Output 0: out emits the same shape as the input.

Controls

• Mode: filter response: lp lowpass, bp bandpass, hp highpass, or notch.
• Cutoff: corner frequency in Hz, from 20 to 20000.
• Resonance: emphasis at the cutoff. Higher values give a sharper, more vocal peak.
• Drywet: balance between the dry input and the filtered signal.

Notes

• The filter is stable under fast cutoff and resonance changes, so it sweeps cleanly.
• Use lowpass to darken, highpass to thin, bandpass to isolate a band, and notch to remove one.

Ports

Inputs

• in row required
  audio_pcm_f32_mono_v1audio_pcm_f32_stereo_v1

Outputs

• out row
  mirror_input

Parameters

Mode (Mode) Menu op('filter').par.Mode

Default:

lp

Options:

lp, bp, hp, notch

Cutoff (Cutoff) Float op('filter').par.Cutoff

Default:

1000

Range:

20 to 20000

Resonance (Resonance) Float op('filter').par.Resonance

Default:

0.3

Range:

0 to 1

Drywet (Drywet) Float op('filter').par.Drywet

Default:

1

Range:

0 to 1