Plugin interface — screenshot pending
Filter

EVOC 20 Filterbank

Apple

Where to get itIncluded with Logic Pro. It is part of that DAW, not a separate download.apple.com

EVOC 20 Filterbank is a dual-bank formant filter plugin that processes audio through two parallel filterbanks with up to 20 frequency bands each. It excels at sculpting vowel-like tonal characteristics and creating distinctive spectral effects by independently controlling each frequency band's level, with additional capabilities for crossfading between banks and LFO-driven modulation.

Written from the manual and checked against it. How we check

Key Features

01Two parallel formant filter banks (A and B) with up to 20 frequency bands each
02Independent level faders for precise control of each frequency band
03Formant Shift parameter to move all bands across the frequency spectrum
04Crossfade (Fade AB) between filter banks with LFO modulation
05Two LFOs for modulating Formant Shift and Fade AB with 6 waveform types
06Resonance control affecting center frequency emphasis and character
07Slope selection (6 dB/octave or 12 dB/octave) for filter attenuation
08Integrated overdrive circuit in output stage
09Stereo modes: s/s (stereo in/out) and m/s (mono in/stereo out)
10Stereo Width knob for distributing bands across the stereo field

Things to Try

  • 01Set up completely different or complementary filter curves in both filter banks and use tempo-synchronized LFO modulations with different rates for each LFO to create rhythmic formant shifts
  • 02Insert a tempo-synchronized delay effect such as Tape Delay after EVOC 20 Filterbank to produce unique polyrhythms
  • 03Use rhythmic material like a drum loop as input and apply Formant Shift on a tempo-synchronized schedule such as every four bars or every eighth-note triplet to generate interesting results
Official Website↗User Manual↗

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