MATRIXSYNTH: New VoIS Modular 15-Channel Vocoder and Fixed Filter Bank

Sunday, October 10, 2021

New VoIS Modular 15-Channel Vocoder and Fixed Filter Bank

video upload by Glubsch Productions

"A short promotional video for my new Eurorack-style vocoder including a fixed filter bank."

Demo of the fixed-filter bank of the VoIS Modular vocoder.

video upload by Glubsch Productions

"Some experimenting with my new Eurorack modular vocoder to demo the fixed filter bank. As input signal (Voice In), a handful of tuned sawtooth oscillators was used. For further details, updates and availability of the product, please visit"


15 adjustable filter channels with clipping indicators
Slew to create unique slurring effects
Silence bridging to fill periods of silence with the filtered excitation sign
Pitch shift (WRP1) to shift analysis filter channels up or down
Spectral tilt (WRP2) to manipulate the overall spectrum with a single knob
V/UV detection for automatic detection of voiced/unvoiced signals
Freeze to bring the vocoded signal to a standstill
Noise to select either pink or white noise for the excitation of unvoiced signals
BP/LP to select between low-pass or band-pass response of the lowest channel (100 Hz)
Line inputs for voice and exitation signals with clipping indicators
FFB Out to output the fixed-filter bank audio signal
Vcdr Out to output the vocoder audio signal
The fixed-filter bank is adjustable via the 15 channel filters, pitch shift and spectral tilt.

A user manual will be published soon.

Note: On the final frontpanel in the shipped product, the print "WRP1" will be replaced with "Pitch shift" and "WRP2" will be replaced with 'Spectral Tilt'."

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