[sdiy] voltage quantizers

[Carsten Tönsmann]

Hi Mark,

perhaps a 8-Bit to 6-Bit solution could work:

- Voltage reference e. g. 5V
- Input Voltage 0 to 5 V
- 8 bit ADC
- put the higher 6 bits to 8-bit DAC (DAC08) and connect the two LSBs to 
ground (so you don't need any computation / conversion)

The result is a division of 5V by 64 (2^6), not exactly 5 octaves, but 
nearly. Perhaps you can play around with voltage references and output 
amplification...

I use this effect in my UCVM module:

http://www.analog-monster.de/ucvm_en.html

Cheers

Carsten
Analog-Monster!
http://www.analog-monster.de/index_en.html

----- Original Message ----- 
From: "mark verbos" <mverbos at earthlink.net>
To: "Synth DIY" <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, April 18, 2007 8:31 AM
Subject: [sdiy] voltage quantizers


> Hi there,
>
> I need to build an 8 channel quantizer for a friend. Nothing fancy,  just 
> semitone scale, but it must be quick. There has been a lot of  talk about 
> Chris List's ARP style quantizer over the years. Scott  Stites recently 
> did an updated version and had success, but I have  been wondering. How 
> fast is the action on these things?  Would it not  be a better solution to 
> multiplex 8 channels around an 8 bit AtoD  followed directly by an 8 Bit 
> DtoA? Has anyone done this? The Buchla  MARF does something like this, but 
> using a discrete flash converter.   I'd think IC converters would be even 
> faster.
>
> Just hoping for some discussion...
>
> Mark
>
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