On Fri, Oct 23, 2009 at 6:20 AM, Klaus Schulz <kls.schlz@xxxxxxxxxxxxxx> wrote: > The mute/unmute of playback outputs seem to play fundamental role in the > routing process. Perhaps something in this area goes wrong. Again: Is there > a way to explicitely control channel > volume with amixer? the question is ill-formed. i'm not sure that you are clear yet that the hdsp has a matrix mixer. any software output channel can be sent *simultaneously* to any hardware output channel, and hardware input channel can be sent *simultaneously* to any hardware output channel. it is therefore meaningless to talk about "controlling channel volume" because such a concept does not exist in any direct way in such a mixer. there are approximately 15,000 gain controls in the hdsp matrix mixer: which one are you talking about? the closest you can get to it is to say that a given s/w output or h/w input channel (number I) is routed to a single h/w output channel (number O) with some gain level G, and that the gain level for all other routings of I are set to zero. Varying G would then have roughly the effect of "varying the channel volume", although in the h/w its just another gain control for the level of I sent to O. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
