[sdiy] Aztec Progress

[Michael Ruberto]

ok now that the VCA prob is taken care of I have made more progress! redid 
the CV part because the CV was increasing 3914 gain while also increasing 
VCA gain. a simple CV mirror fixed that. now I can use the circuit for 
modulation. here is a sample where a triangle LFO fed to the input of the 
Aztec and it's output being applied to the cutoff of a Synthacon VCF while I 
manually change it's bit depth.
www.sunrisecomputersolutions.com/samples/aztecmod.mp3  (~500K)

gonna be interesting to run the output into a quantizer and then a VCO. I'm 
almost done with it now. need to redo the schematic, write up the procedure 
for calibration, and tinker with a component value here and there still. I 
am thinking about designing it with 2 cores, one with the 3914 and the other 
with the 3916 and a switch to select which one goes to the output. but I'll 
work on that later. then maybe I'll go the extra mile and make a 20 bit 
version.

~M

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