Pip Filter

Compact low-pass filter and VCA

ALM Busy Circuits · 4 HP · 3U

Panel · 20.3 × 128.5 mm

Description

A compact 2-pole low-pass filter with resonance, a pingable trigger input and a built-in VCA in 4 HP: two frequency CV inputs, one through an attenuverter, the other roughly tracking 1 V/oct; resonance into self-oscillation.

Key features

  • 12 dB/oct low-pass, Freq and Res knobs
  • Freq CV 1 (0-5 V) with its attenuverter, Freq CV 2 (0-8 V, rough V/oct)
  • Trig input to ping the filter (rising edge)
  • VCA (0-5 V), fully open when unpatched

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