[sdiy] digital control of CV

[John Mahoney]

At 05:47 AM 9/3/2007, Andre Majorel wrote:

>Only you can say. A +/-1 LSB 12-bit DAC will get you within +/-3
>cents of your target. Worst case, an interval could be 6 cents
>off. At 440 Hz, that's a 1.5 Hz beating.

Yeah, and then you got the error of the VCOs on top of that.

This "bits of resolution" topic comes up once or twice a year, and 
Paul Schreiber sometimes posts what I'll call his "digital converter 
resolution white paper." If I could locate a local copy (I thought I 
had archived it), I'd post it here. It's an excellent analysis of how 
much resolution you really need, how to get it (or not), and the 
conflict between marketing and accuracy. Wish I could find it right 
now. Paul...?
--
john


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