On Fri, 21 Apr 2006 11:31:19 -0400
Lee Revell <[EMAIL PROTECTED]> wrote:
> Then configure xine to use the plug:surround51. It should have a dialog
> to let you select the sound device.
Xine seems to do it. At least if I unmute "spread" and choose "shared"
for surround in alsamixer. The quality is not impressing though (It
sounds like the both front channels are spreaded over to the other
channels. The subwoofer rarely creates at least the smallest woof. Some
music, mainly folk, is played very clear but from distance, and the rest
seems to miss some frequency-ranges.)
> Please tell us exactly what you are trying to do. Are you using actual
> 5.1 sources like DVDs, or do you want to play stereo sources and have
> them upmixed to 5.1?
>
> Lee
I tried both. There's already an unanswered mail from me here in the
archive. It's called "5.1 not working well with via82xx and sblive 5.1".
I also tried examples and demo files (ac3, wav) from the net with the
mentioned programs (xine, aplay, mpg321). The asound.conf examples
mentioned in the docs in the alsa-tools/alsa-utils-packages
don't work too. For example:
pcm.upmix51 {
type upmix
slave.pcm "upmix51"
channels 6
}
doesn't change anything--at least if I can trust my ears and when I
look into alsamixer. And:
pcm.!default "plug:upmix51"
gets rejected because the plug is not valid for pcm default:
ALSA lib pcm.c:2017:(snd_pcm_open_conf) Invalid type for PCM default
definition (id: default, value: plug:upmix51)
Really, alsa is anything else than intuitive. Alsamixer doesn't reflect
changes to the configuration--not even by renaming the channels. You
should start to think about profiles and use-cases and distribute good
settings and easy setups for the card types.
Dennis
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