The Yusynth Fixed Filter Bank makes it possible to greatly enrich the sonic palette of a modular system. It is also a key element for the recreation of “natural” and environmental sounds, or of conventional music instruments. Although it evokes the principle of a mere graphic equalizer, it has marked differences. Mainly, the filter Q is higher and the bandpass slopes are steeper than in a graphic equalizer. Furthermore when a control is set to zero, the corresponding spectral band is completely muted.
Complex/entangled rhythms can be created on the fly by multi-band filtering a simple sequence.
This module has twelve fixed band-pass filters with -12dB/octave slopes, a low-pass filter and a high-pass filter with -24db/octave slopes. All the filters are resonant with a Q coefficient around 3.7. The gain of each filter is adjustable from completely silent to maximum.
Two inputs (with different gain levels) are provided as well as three outputs: a main output with all filter cells mixed, an output with only odd cells and the third output with only even cells. These separate outputs make it possible to use the Fixed Filter Bank for creating pseudo-stereo sounds (spatialization).
The Fixed Filter Bank features a Bypass switch which passes the Dry IN HIGH signal directly to the OUT ALL jack. This makes comparison of filtered / un-filtered sounds much easier.
The Fixed Filter Bank comes in a 4U width with 1″ (25.4mm) knobs controlling 14 potentiometers for modification of each frequency.
The module operates at +/- 15V and comes with a Synthesizers.com style power connector. Module depth is 60mm. Current draw: 70mA +/-
