[LAU] aplay and HDSP single channel?

[Peter Plessas]

Paul Davis wrote:
> On Sun, Aug 9, 2009 at 12:52 PM, Peter Plessas<plessas at mur.at> wrote:
>> Hi List,
>>
>> how can i tell aplay to use just single channel(s) of my HDSP card?
>> When doing:
>>        aplay -D default:Card=DSP file.wav
>> i get playback on all 18 channels.
>>
>> any help is appreciated!
> 
> you would need an ~/.asoundrc file that defines a "route" "plugin
> device" that explicitly has only 1 (or 2) channels that are mapped to
> the relevant channels of the real card. i'm afraid i don't have the
> time or memory to provide an example - google will help, for sure..
> then tell aplay to use that device instead of "default:Card=DSP"
thank you Paul! I will try that as option! Do you think there is any cpu 
, memory or latency overhead when using a "route" plugin?

cheers,
Peter