Alan Bromborsky wrote: > could you explain why > > arecord -f cd -D plughw:0,1 | aplay - > > works with 5.1 channel ac3 streams even though I have "-f cd" set. AC-3 is a mechanism designed to transport surround sound over S/PDIF, which has only two channels. It compresses the data so that it has the same bandwidth as an uncompressed two-channel stream. Regards, Clemens ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user