Thank you, it works, now I can play a file on specified lines.
But now, the problem is that I can not play files simultaneously. If I start
two aplay process on different lines the second process wait for the end of
the first one to begin, maybe it is because the soundcard is used by the
first process.
Does it exist an alsa sound wrapper (aserver maybe ?) in order to play
several files in the same time ?
Thanks,
Nicolas
Le Mardi 20 Novembre 2001 17:36, Takashi Iwai a écrit :
> At Tue, 20 Nov 2001 16:34:05 +0100,
>
> Nicolas DEVERGE wrote:
> > Hi,
> > I'm a newbie in sound and I finally installed my Terratec EWS88MT using
> > the latest drivers (0.9.0beta9).
> > It seems to work, when I use aplay with default parameters, I can hear
> > sound on the lines 1 ans 2 of my external box.
> > My question is how can I play in same time another sound file on the
> > other lines (I have 8 output lines on my external box). It seems that
> > aplay provides a device parameter but I don't understand how it works.
>
> You'd better to define a new pcm device in your ~/.asoundrc file.
> For example, to output via channel 6 and 7 (count from channel 0),
> define as follows:
>
> pcm.my_output {
> type plug
> ttable.0.6 1
> ttable.1.7 1
> slave.pcm {
> type hw
> card 0
> }
> }
>
> where my_output can be named as you like.
> Now you can play two-channel data through channel 6 and 7 via aplay:
>
> % aplay -D my_output foo.wav
>
> Similarly, when you'd like to output SPDIF on EWS88MT, use channel 8
> and 9 (they are hardcoded).
> For more precise info, see alsa-lib/doc/asoundrc.txt.
>
> These pcm definitions are necessary also when you use alsa-oss
> emulation lib (which is different from oss emulation module).
> You can/need to define the pcm device pcm.dsp0 as well as above, so
> that output from an OSS application will be routed to channel 6 and
> 7.
>
>
> ciao,
>
> Takashi
>
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