[sdiy] MIDM-CV DACs, Part #3 (last)

[René Schmitz]

Hi Colin and all,

>Paul S dictates authoritatively that you need your DAC to have an error of
>less than 1% of a semitone.

That is the question here IMO.

>Assume you have 1 oscillator tuned to 256Hz (2 ^ 8)
>We want a second oscillator at the same frequency, but, oh no !, we have a 1
>cent error !
>Our actual frequency is 2 ^ 8.000833 = 256.148 Hz.
>So we have a beat frequency of 0.148 Hz - that's about one beat every 7
>seconds.

It wouldn't even do that if the second oscillator is driven from the same DAC 
(via the S&Hs).

Cheers,
 René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159