Scott Dorsey wrote:

Actually, I had my new mic preamp connected
to my computer (w/ S/PDIF) and there was some
noise, but only when recording an distorted
guitar (using a SM57). And I'm not sure if
this could be "jitter sound" or something
like distortion by overdriving the SM57 in
the pre (I had to turn the gain down low
since it was a very hot signal).

Jitter has nothing to do with any of this. Jitter does not cause noise.
It causes a sort of distortion, but one where the distortion products are
very close in frequency to the original tone. It is a fairly subtle thing
in comparison with what you are experiencing.

You should like you're clipping the preamp. Put a pad on the preamp
input and stop worrying so much.
--scott

OK, I did. I turned the pre's -20dB pad on
and had the analog input well below -6dB,
varying the gain and digital output volume,
and kept it safely under -6db, sometimes
under -12dB. But it was still there.
And now I'm really worrying.

I would like you to listen to it:
http://www.lieber-media.de/mathias/s...x386_noise.mp3
(~ 700 KB) You can hear that especially at sec. 14 and 15.
It's a high-pitch crispy noise.

Could you give me your opinion about it?
Thank you very much.

Nudge

--
Nudge // PCS Records Studio Leipzig
http://studio.lieber-media.de