[sdiy] DIY polyphony handler

Carsten Toensmann carsten at analog-monster.de
Wed Jan 23 08:47:04 CET 2019

I built an universal ( http://www.analog-monster.de/ucvm_en.html ) 8 voice interface for my Formant Modular in 2004 based on an 8 bit Atmel (tm) microcontroller, which works sufficient for my needs. It uses a 6 bit resolution what is the absolute minimum for a 12 tone scale, so a higher resolution would be better, more precise and more flexible. The hardware wasn't that problem, but the software was, so I can highly recommend an ISP interface to work with the Module while developing the software (read my test report, perhaps this avoids some traps for you).

-----Ursprüngliche Nachricht-----
Von: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] Im Auftrag von ulfur hansson
Gesendet: Dienstag, 22. Januar 2019 20:06
An: synth-diy at synth-diy.org
Betreff: [sdiy] DIY polyphony handler

hello list!

i have a few diy voice “cards” (meaning various prototypes ziptied together) of my own design laying around, and have been thinking it’d be neat to build a 6-voice midi CV/gate handler for polyphonic playing.

all parameters are currently voltage controlled, so building a rudimentary knob control panel is easy - however, when it comes to choosing DAC’s and microcontroller platforms, i’m a little lost!

does anyone have experience building a basic setup like this? i’m thinking up to 8x round robin pitch CV’s and Gates.

(bonus feature; DIY autotune anyone?)


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