The voice signal is fed into the vocoder's analysis input.
This signal is sent through a set of parallel filters with successive envelope followers that create a "signature" of the input signal,
based on the frequency content and level of the frequency components.
The VOCODER ANALYSIS and VOCODER SYNTHESIS modules form a basic modular vocoder.
The vocoder needs two input signals: a voice element which serves as the raw material for the tonal shaping, and is patched into the analysis section (VOCODER ANALYSIS module);
and a carrier signal, which is patched via the instrument input into the synthesis section (VOCODER SYNTHESIS module).
The speech signal is chopped up and analyzed in the VOCODER ANALYSIS module, and then combined with the carrier signal in the VOCODER SYNTHESIS module synthesis section.
As a result of this procedure, the carrier signal assumes the tonal character of the speech signal, but with its own pitch maintained.
Env Level control knob acts as attenuator when CV In inserted.