Hi,
I'm having trouble getting USB audio playback to work at a 96kHz
sampling rate. The problem is that if I play a .wav file from the
command line with aplay ("aplay blah.wav") everything's fine for awhile,
but if I put any load on the machine (i.e., open a browser, etc) the
sound stops or becomes garbled, and the cpu load jumps up to 100%. For
awhile I thought the problem was with gstreamer, because if I run:
> gst-launch-0.10 filesrc location=./blah.wav ! wavparse ! alsasink
the output tends to break after a just a couple of seconds. aplay will
definitely run longer, but it will also eventually break.
As for configuration, I have a FC6 machine running kernel 2.6.18, with
the following alsa components installed:
alsa-lib.i386 1.0.12-2.fc6
alsa-lib-devel.i386 1.0.12-2.fc6
alsa-tools.i386 1.0.12-4.fc6
alsa-utils.i386 1.0.12-3.fc6
alsa-plugins-1.0.12
I have a M-audio USB Transit card as the 2nd sound card; the first is a
Chaintech AV-710. I'm using a very simple asound.conf file:
pcm.!default {
type plug
slave.pcm "digital-mix"
}
pcm.digital-mix {
type rate
slave {
pcm "hw:1,0"
rate 96000
}
converter "samplerate_medium"
}
At this point I'd appreciate any suggestions or debugging tips. I also
apologize if this has been asked before, and if there's a fix just point
me in the right direction. Or, maybe this just isn't suppose to work in
the first place...
Thanks,
Marc Alley
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