Re: optical SPDIF output on Abit NF7 nforce2 main board.

[Takashi Iwai <tiwai@suse.de>]

At Mon, 01 Sep 2003 17:58:15 +0200,
Carsten Koch wrote:
> 
> Takashi Iwai wrote:
> ...
> >>The sound was playing too fast with mpg321.
> >>I was using
> >>    mpg321 -o alsa09  --audiodevice hw:0,1
> >>It seems like mpg321 was playing my 44.1kHz mp3 in 48kHz mode.
> > 
> > 
> > then try plughw:0,1.
> > alsa-lib will convert the sample rate automatically.
> 
> Unfortunately, the sound is playing too fast with plughw:0,1 as well.

please check /proc/asound/card1/pcm0p/sub0/hw_params during playback.
if it shows 44100, perhaps spdif configuration doesn't match with the
request one.  please check the spdif status in
/proc/asound/card/ac97#0, too.

> Also, I was wrong about alsaplayer playing it at the right speed.
> Maybe I had left alsaplayer's speed at ~90% when I last used it.
> I started it again now with a new mp3 file to load and it played
> that one (and all other 44kHz files I tried from then on) too fast
> (both with hw:0,1 and with plughw:0,1).
> 
> One more question: Is there a way to make hw:0,1 or plughw:0,1 the
> default? Many programs do not have a --audiodevice parameter or
> use the OSS emulation and I would of course still like to hear their
> sound.

you can overwrite the default pcm in ~/.asoundrc with '!' prefix.
for example,

	pcm.!default "hw:0,1"


for OSS emulation, try libaoss wrapper.  (hope it still runs :)


Takashi


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