Hi there, I'm trying to set up a virtual multi-channel device as per this documentation: http://www.alsa-project.org/main/index.php/Asoundrc#Virtual_multi_channel_devices I've adapted the example for my hardware and put it in /etc/asound.conf (included inline below). When I try to test the configuration with aplay, this happens: $ arecord -f S16_LE -r 44100 -c 12 -D multi | aplay -f S16_LE -r 44100 -c 12 -D multi ALSA lib pcm_hw.c:1466:(_snd_pcm_hw_open) Unknown field slaves arecord: main:682: audio open error: Invalid argument ALSA lib pcm_hw.c:1466:(_snd_pcm_hw_open) Unknown field slaves aplay: main:682: audio open error: Invalid argument I am surprised by the error message, because the example at alsa-project.org made use of the slaves keyword. Any guidance would be appreciated. Yes, I know to expect drift between the physical devices when I get it working. :-) Thanks, Sheldon. # /etc/asound.conf pcm.multi { type multi; slaves.a.pcm "hw:0,0"; slaves.a.channels 6; slaves.b.pcm "hw:1,0"; slaves.b.channels 6; bindings.0.slave a; bindings.0.channel 0; bindings.1.slave a; bindings.1.channel 1; bindings.2.slave a; bindings.2.channel 2; bindings.3.slave a; bindings.3.channel 3; bindings.4.slave a; bindings.4.channel 4; bindings.5.slave a; bindings.5.channel 5; bindings.6.slave b; bindings.6.channel 0; bindings.7.slave b; bindings.7.channel 1; bindings.8.slave b; bindings.8.channel 2; bindings.9.slave b; bindings.9.channel 3; bindings.10.slave b; bindings.10.channel 4; bindings.11.slave b; bindings.11.channel 5; } pcm.multi { type hw; card 0; } pcm.ttable { type route; slave.pcm "multi"; slave.channels 12; ttable.0.0 1; ttable.1.1 1; ttable.2.2 2; ttable.3.3 3; ttable.4.4 4; ttable.5.5 5; ttable.6.6 6; ttable.7.7 7; ttable.8.8 8; ttable.9.9 9; ttable.10.10 10; ttable.11.11 11; } ctl.ttable { type hw; card 0; } ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
