[linux-audio-user] ALSA + multichannel card
bu at orbitel.bg
Tue Nov 15 06:00:26 EST 2005
I've successfully installed ALSA drivers 1.0.10rc3 on my server, having two
Terratec PHASE 28 cards. Each Terratec PHASE 28 has 8 audio outs, which can
be combined into 4 stereo out channels. I want to configure ALSA in such a
manner that will allow me to play different sound in each of the four stereo
channels. I.e. I want to combine the 8 outs into pairs and use them
I think I've solved it, but:
1. I'm puzzled why the amixer output for each card doesn't show I have four
stereo out channels but have Front, Rear and Side as stereo, and Center and
LFE as mono. Does this concern the ice1724 module?
2. When I play sound through the newly configured PCM devices it's volume is
low even if I've configured it with amixer to 100%.
Can you please tell me if my configuration is correct - does it combine each
of the 8 out channels into 4 pcm devices?
Does each of these 4 pcm devices represent one of the Front, Rear, Side,
Center/LFE channels (I want to control the volume through amixer).
I want to use it with mplayer - for instance `mplayer -ao alsa:device=card11
song1.mp3` and `mplayer -ao alsa:device=card12 song2.mp3`, etc.
Here's my .asoundrc sample for one of the cards:
Thanks for the help.
Devoted Orbitel Fan :-)
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