Dual LFO & ASR synth module Demo

YouTube Published on Jun 10, 2012 by davidryle

"Cat Girl Synth CGS58 Utility LFO and two CGS34 Analog Shift Registers in one module. The addition of Loop and Series switching on the dual ASR's was a fun logic exercise.
At the time of video posting, the module still has a few bugs. One of the registers is glitchy and produces a short voltage burst occasionally. The Looping function layers the last voltage onto the next sample causing a linear rise in cv pitch, which is probably a switch logic problem. Otherwise the module works pretty well.
The series switch sets up a six register round. The channel A LFO pulse is forced to the channel B side for this keeping everything timed. The Loop function also works with/without the Series and was a major hurdle to make work together - logic wise.
I added the Hi/Lo speed caps to get the range broader on the LFO. I also added a mute switch for each register stage on the ASR's.
A fun project but a time consuming and challenging build for my level. The module is 3 spaces wide in 5U MOTM format. The depth behind the panel is 3.5 inches (89mm). Pretty tight.
This thing is a vco eater. I used eight vco's in this demo. Two for the LFO and six for the ASR's.
Thanks for watching and commenting."