On 22-Feb-2006 Ismael Valladolid Torres wrote:

>> > $ aplay -D hw:0,0 shared/testing.wav
>> > Playing WAVE 'shared/testing.wav' : Signed 16 bit Little Endian, Rate 
>> > 11025 Hz, Mono
>> > aplay: set_params:901: Channels count non available
>> >
>> > I thought it was posible to select audio channels this way using
>> > aplay. No .asoundrc here. Any ideas?
>>
>> Try:
>>
>> aplay -v -Dplughw:0,0 shared/testing.wav
>>
>
> This one works. What does "plug" mean here?

The plug plugin automatically converts channels, rate and
format requested by the application to what the card can
accept due to hw constraints.
plughw: is the default. Use hw: only if you know the hw
parameters which the card can manage.

http://alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html#pcm_plugins_plug

--
Giuliano.


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