[ntp:hackers] AC97 audio
David L. Mills
mills at udel.edu
Tue Nov 14 07:20:38 PST 2006
Guys,
Further to the behavior I reported about FreeBSD audio and the WWV/H
driver. About every minute or two the driver would skip 120 ms of codec
samples. I thought that peculiar to the particular motherboard, but now
I have further evidence. The glitch occurs on two different Intel
motherboards with the AC97 mixer chipset. It does not occur with at
least one other sound card. I can find no explanation for the glitch,
which causes more or less constant loss of 960 samples of 8000-Hz
signal. Note the sound cards and mixer work fine with Windows/XP and
with sound cards other than compliant AC97.
Dave
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