[sdiy] Aztec Progress

[Michael Ruberto]

Ok I have finished the schematic - for now. I am now in the tweaking phase 
so some things will change but what's here will work. There are notes which 
explain some of how it works but I will write a better circuit analysis when 
I have time.

http://www.sunrisecomputersolutions.com/samples/aztec_2_1.gif

~M


>From: "Michael Ruberto" <frankentron at hotmail.com>
>To: synth-diy at dropmix.xs4all.nl
>Subject: [sdiy] Aztec Progress
>Date: Fri, 20 Jun 2003 16:26:15 -0400
>
>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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