[LAD] A little quiz about audio measurements...

[fons at kokkinizita.net]

On Fri, May 28, 2010 at 08:30:54AM -0700, Niels Mayer wrote:

> Audio ADCs and DACs have three important inputs;
> the signal input, the voltage reference, and the clock.
> Noise and interference on the voltage reference causes
> amplitude modulation, and jitter on the clock causes
> phase modulation. The resulting modulation products
> look very similar in the frequency domain. One of the
> authors once spent several days trying to track down a
> low-frequency jitter problem, only to find that it was
> in fact a problem of LF noise on the voltage reference.

You're close. See the extra hint in a previous post.

Ciao,

-- 
FA

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