Vocoder: 24Channels Synthesize Part VCA

Here are the VCA’s of the synthesize part from my Vocoder project. I followed the same modular principle as in the other parts of the Vocoder. Each VCA PCB contains 8 VCA channels. So you can start with 8 channels and advance to 16 or 24 channels. The VCA’s are designed plain forward around the LM13700 as commonly used. The output voltage for each VCA is adjustable to compensate different gain from the filters. The filters are pluggable as in the analyze part. You have the opportunity to swap filters around and test different filter topologies. The schematic given here contains only two channels. The complete documentation will show up on my website when everything is finished. Next to come: The filters for the synthesize part.

Vocoder: Synthesize Part PCB 8 Channels stuffed.

Schematic shows only two channels. Complete documentation on my website asap.

Vocoder: Synthesize Part Schematic VCA