* Sound distortion on cm8738 with 0.9.0rc1 and beta12
@ 2002-05-20 20:39 Steven Walter
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From: Steven Walter @ 2002-05-20 20:39 UTC (permalink / raw)
To: alsa-devel
Those are the only two version that I have tried so far. This problem
is a recent one however. It exhibits itself when playing a DVD movie
(The Matrix, region one) with xine. I have spoken to a xine developer,
and he was of the opinion that it was an ALSA problem, not a xine one.
So I am reporting this here.
During the beginning Warner Bros. logo clip, the sound has a
helicopter-effect going on (you hear the sound, but broken up by a
whop-whop-whop-whop noise). This stops once the DVD menu is reached,
but begins again for the actual movie.
There are a few interesting differences between the clips that do and
don't work. The one's that do not work on 4 channel, and use a buffer
size of 8192 bytes. The one that does is only 2 channels, and has a
buffer size of 16384. Is it possibly that there is a bug (hardware or
software) in the usage of this small buffer size?
If I tell xine not to use four-channel sound, the two problematic clips
sound perfect. However, they are then played as 2 channel clips, again
with the 16384 buffer size.
Four channel playback did work at one time. Possibly in the beta10 era.
If there is interest, I will try reverting to this version, and testing
for the problem there. Any assistance is appreciated. Thanks
--
-Steven
In a time of universal deceit, telling the truth is a revolutionary act.
-- George Orwell
He's alive. He's alive! Oh, that fellow at RadioShack said I was mad!
Well, who's mad now?
-- Montgomery C. Burns
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2002-05-20 20:39 Sound distortion on cm8738 with 0.9.0rc1 and beta12 Steven Walter
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