I have two 4 channel cards.
So far I have had success combining the two PCMs on one card like:
pcm.c1b {
type multi;
slaves.a.pcm "hw:0,0";
slaves.a.channels 2;
slaves.b.pcm "hw:0,1;
slaves.b.channels 2;
bindings.0.slave a;
bindings.0.channel 0;
bindings.1.slave a;
bindings.1.channel 1;
bindings.2.slave b;
bindings.2.channel 0;
bindings.3.slave b;
bindings.3.channel 1;
}Then things (like mplayer) can do surround sound on this card without problems. Switching to "hw:1,0" and "hw:1,1" also works, making the other soundcard do surround. However, the moment I try to use "hw:0,0" and "hw:1,0" together or any other combination which spans the two cards, I run into trouble. I was hoping that I would be able to combine these two cards to get 7.1 channels. There was some talk about synchronization issues between the two cards. I wonder if this might be the problem? The cards are identical, however and have dedicated IRQs, so I don't see why there should be a problem in this regard...? I have certainly seen no synchronization issues with using the hw:0,0 and hw:0,1 or hw:1,0 and hw:1,1 together. -- Wesley W. Terpstra <[EMAIL PROTECTED]>
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