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Sound Demo-
and some explanation of the controls...
I noticed I made an error about what was said regarding the LFO ramp waves.. the scope will show an up ramp wave but it sounds like a down ramp.. that is because of the VCF response to voltages is +5v will totally cutoff the frequencies.. 0v lets all the freq. thru. So basically the VCF inverts CV's from what you'd normally expect.
Which is my next challenge.. using a SSM2056 ADSR chip to get an EG for the VCF. But for it to work, I must invert the ADSR's V+ output (or I should just have the inverter right before the VCF).. I am hoping a simple differential opamp circuit will do the trick. To trigger the gate, I will again try to use the same MIDI interface I used in the vid to send a +5v trigger/gate to the SSM2056 whenever any MIDI note ON is detected.. and hopefully at a minimum, it stays triggered/gated until I release the last note held.
/Blaine