This is a percussive voice module that can also be used to process other audio. It has an analog noise source, two envelope generators, VCA and resonant state variable VCF (LP, HP and BP outputs).
Designed for 12V systems but can be used with 15V systems with just a few resistor changes.
For complete descriptions of the way the module is used, mp3 samples and how to build it, including schematics and parts list; download this PDF file.
Boards are available now. Price for 1 PCB is $8.
Unfinished eurorack
panels are available for this project, they are 10HP and cost $8 each.
There is
more information here about panels. If you're interested in drilling your own panel for
this project, feel free to use my
drill guide. That image should be printed at 300dpi for proper
scaling.
