[PlanetCCRMA] USB Device Phillips DSS Speakers
Fernando Pablo Lopez-Lezcano
nando at ccrma.Stanford.EDU
Tue Oct 22 16:34:01 PDT 2002
> > I think that currently alsa usb sound support does not
> > include a mixer (bu I'm not completely positive about that).
> > Try playing stuff on the second card (with aplay, for example).
>
> how do I acess the device with aplay? aplay -l doesn't list it...
See if you have (at least) two cards:
cat /proc/asound/cards
And then take a look at what proc says about devices:
cat /proc/asound/devices
For example, this is what I get at a random computer around here, I'll
add some comments to the list starting with #:
#first card:
0: [0- 0]: ctl
16: [0- 0]: digital audio playback
24: [0- 0]: digital audio capture
1: : sequencer
33: : timer
# second card
32: [1- 0]: ctl
40: [1- 0]: raw midi
50: [1- 2]: digital audio playback
58: [1- 2]: digital audio capture
49: [1- 1]: digital audio playback
48: [1- 0]: digital audio playback
56: [1- 0]: digital audio capture
So for this one you could play through the first card
aplay --device=hw:0,0
or through the second:
aplay --device=hw:1,0
I don't have a usb card here to see how it shows in the proc listings.
-- Fernando
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