[Discuss-gnuradio] Followup: M-Audio Revolution 7.1 as audio source at 192KHz: Fedora 14/Alsa/ICE1724 driver

[Marcus D. Leech]

I'd noticed a problem with running the M-Audio Revolution 7.1 sound card 
at 192KHz as a source in Gnu Radio -- the spectrum was
  all "funny", with the spectrum getting "reflected" about 48KHz, 
almost as if the actual sample rate on the card wasn't correct, and
  perhaps set to 96KHz instead of the expected 192KHz.

To eliminate Gnu Radio as a cause, I used "arecord" with the correct 
parameters to record a 20-second chunk of audio from the card,
  then used Gnu Radio to plot the spectrum.  Sure enough, the spectrum 
is still not correct, so I suspect this is a driver issue.

I *know* that I used to be able to use this card at 192KHz several years 
ago, and the card advertises 192KHz sampling as a feature.

--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org