28 May
2010
28 May
'10
5:05 p.m.
On 05/28/2010 02:31 PM, fons(a)kokkinizita.net wrote:
Hello all,
This week I had to perform measurements on a audio
interface, and this resulted in some quite interesting
results. Before revealing what happened, I'll let you
have a look at some of the data and come up with your
own conclusions, see
<http://www.kokkinizita.net/linuxaudio/quiz.html>
(Free beer at the next LAC for the best analysis)
Ciao,
Well, interpreting an 'experiment' that one has not conducted
him/herself without knowing _all_ parameters of the setup is not
something to encourage doing..
Did you use symmetric (XLR) connections? Are the sample-rate settings of
both cards identical? what was the physical distance between the devices
(cross-talk)? Was there any ground-lift equipment (built-in?) in place
or maybe you simply forgot to switch off phantom-power?
Anyway, good that you've labeled it 'quiz'; so here's my guess:
You're encountering reflections (or even standing-waves) in the cable.
(did you uncoil it? or was it a very short one?)
Did you repeat the measurement? using different cables for example.
Cheers!
robin