[sdiy] Quantizer DAC or PWM?

[Tom Wiltshire]

Ooh, that's an interesting idea!

I'd have to sit down and have a bit of a think about it and do a few calculations, but that's really a lovely idea. Being able to run something like the cheap MCP4922 dual DAC as a u-law "higher res" audio DAC would be a very nice trick to pull off. 

Tom


> On 20 Dec 2022, at 13:42, mark verbos via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> Couldn’t one do something like that to replace an AM6070 µ-law DAC?
> 
> Mark
> 
> 
> 
>> On Dec 20, 2022, at 12:41 PM, Florian Anwander <fanwander at mnet-online.de <mailto:fanwander at mnet-online.de>> wrote:
>> 
>> Hi
>> 
>> Am 19.12.22 um 22:54 schrieb Didier Leplae via Synth-diy:
>>> Ah yes, a separate output for octaves is brilliant!
>> 
>> btw Scott rider aka Old Crow used a similar trick to achieve Hz/V characteristics with an 8Bit:
>> 
>> https://github.com/cs80/CS15_SSK/ <https://github.com/cs80/CS15_SSK/>
>> 
>> He uses a dual channel DAC MCP4922. DAC #1 is providing different reference voltages for each octave, which then are used by the DAC #2 which converts the same twelve note data to a spreading CV the higher the octave / refence voltage from DAC#1 respectively is.
>> 
>> Florian
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