following links from the wiki I ended with asoundrc that looks like this : http://www.halfgaar.net/surround-sound-in-linux $ cat .asoundrc pcm.51to20 { type route slave.pcm surround51 slave.channels 6 # Front and rear, at 33% of original signal strength ttable.0.0 0.33 ttable.1.1 0.33 ttable.2.0 0.33 ttable.3.1 0.33 # Center channel routing (routed to front-left and front-right), # 6dB gaindrop (gain half of main channels) per channel ttable.4.0 0.16 ttable.4.1 0.16 # LFE channel routing (routed to front-left and front-right), # 6dB gaindrop (gain half of main channels) per channel ttable.5.0 0.16 ttable.5.1 0.16 } $ speaker-test -c 6 -D 51to20 -t sine -f 40 speaker-test 1.0.17 Playback device is 51to20 Stream parameters are 48000Hz, S16_LE, 6 channels Sine wave rate is 50,0000Hz Broken configuration for playback: no configurations available: Argument invalide Setting of hwparams failed: Argument invalide no application show me my new "card" $ aplay -L default:CARD=NVidia HDA NVidia, ALC883 Analog Default Audio Device front:CARD=NVidia,DEV=0 HDA NVidia, ALC883 Analog Front speakers surround40:CARD=NVidia,DEV=0 HDA NVidia, ALC883 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=NVidia,DEV=0 HDA NVidia, ALC883 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=NVidia,DEV=0 HDA NVidia, ALC883 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=NVidia,DEV=0 HDA NVidia, ALC883 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=NVidia,DEV=0 HDA NVidia, ALC883 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers null Discard all samples (playback) or generate zero samples (capture) does someone has any idea why it don't show? thanks JLM ------------------------------------------------------------------------------ Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers & brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, & iPhoneDevCamp as they present alongside digital heavyweights like Barbarian Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
