On 16 February 2010 16:44, Daniel Mack <daniel@xxxxxxxx> wrote: > Hi, > > On Tue, Feb 16, 2010 at 04:35:29PM +0000, Pedro Ribeiro wrote: >> ALSA information script output is here >> http://www.alsa-project.org/db/?f=fe4cc3eda2df49c6055f55d4cef935524124d1a1 >> and my .asoundrc is here http://pastebin.com/m3f70572d >> >> Currently my .asoundrc has 4 devices: >> - Audio4DJ_A (combines channels 1 and 2) >> - Audio4DJ_B (combines channels 3 and 4) >> - Audio4DJ (combines Audio4DJ_A and Audio4DJ_B) >> - ttable is a device for JACK according to this >> http://alsa-project.org/main/index.php/Asoundrc#Virtual_multi_channel_devices >> >> My goal is to have a separate ALSA soundcard for each pair of >> channels, an ALSA soundcard for 4 channels and a JACK device for all 4 >> channels. >> >> Running speaker-test -c2 -D plughw:Audio4DJ,0,X -twav -l1 >> with X=0 and X=1 correctly outputs to each channel. Also, >> pcm.Audio4DJ_A and pcm.Audio4DJ_B correctly work through both ALSA and >> JACK for each pair of channels. >> >> However, if I try to use the pcm.Audio4DJ (which combines both >> pcm.Audio4DJ_A and pcm.Audio4DJ_B), I get correct output through >> channels 1 and 2, but channels 3 and 4 have a lot of garbage - you can >> hear the track playing but it is at a very high pitch and distorted. > > Could you first try to playback audio without all your quirks using the > following commands, please. > > For channel 1&2: aplay -D plughw:Audio4DJ,0,0 test.wav > For channel 3&4: aplay -D plughw:Audio4DJ,0,1 test.wav > > If that works, we can exclude driver issues. I'm very confident that > will work btw, as this is the way I tested the driver. > > I admittedly have no clue about JACK ;) > > Daniel > > Thank you for the quick reply! it works perfectly! I have no clue why the combined device produces such garbage when playing on channels 3 and 4. Pedro _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
