22 Jan
2009
22 Jan
'09
12:42 p.m.
Pavel Fedin wrote:
Is it possible to use two channels of a sound card as two independent devices for PCM playback?
The sound card is probably not able to handle two independent mono streams, but it is possible to use alsa-lib's software plugins to emulate two devices on top of the real one.
Put this into your ~/.asoundrc or into /etc/asound.conf:
pcm_slave.stereo_slave { pcm "hw:0" # or "hw:1" for the second card ... channels 2 }
pcm.left { type plug slave.pcm { type dshare slave stereo_slave } bindings [ 0 ] }
pcm.right { type plug slave.pcm { type dshare slave stereo_slave } bindings [ 1 ] }
Then use device names "left" and "right" instead of "default".
HTH Clemens