[linux-audio-user] Re: Multiple Cards - Linux-audio-user

3 Sep 2004

...
 I've been reading about setting up multiple
soundcards in
modules.conf/modprobe.conf, but most of the guides I've seen talk about
setting up two different cards -- what if you wanted to set up two
identical cards (like two delta 1010s, or two hdsp/multiface), will the
names of the cards (like snd-hdsp) be exactly the same, and will it thus
be difficult to set something like this up: 
...
 alias snd-card-0 snd-hdsp
alias sound-slot-0 snd-hdsp 
...
 alias snd-card-1 snd-hdsp
alias sound-slot-1 snd-hdsp 
...
 or will it number them somehow?  I haven't tried it
at all, I'm just
wondering for future applications how this would work. 
You can use 'options' and 'id=' your modeprobe.conf (2.6) or modules.conf
(2.4)
and do something like (from my own config file):

  options snd-usb-audio index=1 id=MayaEX7 vid=0x0c45 pid=0x17fd

then /proc/asound/cards has:

..
1 [MayaEX7        ]: USB-Audio - USB Audio
                     USB Audio at usb-0000:00:1d.0-1, full speed
..

Not sure how you access the id with alsa apps, I use portaudio
and it uses the id to select a soundcard.