voder-filterbank - VODER Filter Bank

10-band VODER filter bank with cascaded 24dB/oct filters and per-band MIDI CC control.

Overview

A 10-band bandpass filter bank matching the VODER patent (US 2,194,298). Each band uses two cascaded BiquadFilterNodes for 24 dB/octave rolloff (vs 12 dB/octave single stage), providing strong inter-band isolation essential for formant discrimination. Bands are non-uniformly spaced: six dense bands below 2 kHz cover the critical formant region (F1/F2), four wider bands above 2 kHz cover F3/F4 and fricative energy. Each band’s amplitude is controlled by a dedicated MIDI CC (CC20–29).

Exposed Interface

Ports

Direction	Handle
Input	vf-flt-0a:audio-in
Input	vf-flt-1a:audio-in
Input	vf-flt-2a:audio-in
Input	vf-flt-3a:audio-in
Input	vf-flt-4a:audio-in
Input	vf-flt-5a:audio-in
Input	vf-flt-6a:audio-in
Input	vf-flt-7a:audio-in
Input	vf-flt-8a:audio-in
Input	vf-flt-9a:audio-in
Output	vf-amp-0:audio-out
Output	vf-amp-1:audio-out
Output	vf-amp-2:audio-out
Output	vf-amp-3:audio-out
Output	vf-amp-4:audio-out
Output	vf-amp-5:audio-out
Output	vf-amp-6:audio-out
Output	vf-amp-7:audio-out
Output	vf-amp-8:audio-out
Output	vf-amp-9:audio-out

Parameters

Label	Parameter	Range
-	-	-

Internal Topology

Internal nodes: 20x flt, 10x amp, 10x midi-cc

Total: 40 nodes, 30 connections

Related

• What is a module?
• Build: VODER Filter Bank