On 05/10/10 20:07, Clemens Ladisch wrote: > Capture controls affect audio data that is recorded by the computer. > Playback controls affect audio data that comes out of the sound card. OK. I think everything fits one of these two. I find the asymmetry a little odd. (i.e. Capture controls defined by destination of PCM Capture, while Playback controls not defined by source of PCM Playback) I.e. in reality they are "Capture" and "Output" _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel