On Sat, 2003-07-26 at 10:34, fpirrone wrote: > Mark, > > I absolutely cannot force a play out one channel. Again, using -c 1 > which the manpage suggests is channel #, or to quote: "number of > channels." I played both a mono .wav and an .au file and they came out > of both channels. Stereo plays out both channels with the > psychoacoustic image of spatiality. Frank, This is interesting data. Thanks for checking things out. And I most certainly remember talking before, but I did not remember anything about your specific hardware! ;) I read the man page for the -c option a bit differently. I thought it was saying how many channels I wanted the file to be played or recorded on, and not what channel number I wanted the file played on. To me this would make more sense for the arecord command, where you could tell it to record 1 channel only, but again the problem is 'which channel'? > > Hardware here is an onboard cs4236 chip (also MidiMan 2x2 outboard USB) > with the latest CCRMA updates to RedHat 8.0 SMB workstation running > FluxBox (we've talked before), and everything seems to work as expected. > > So, what's going on here? Is this a default behavior with mono files? > Is this a bug? Why can't a signal be forced to one channel? Seems to be one or the other. Even under Windows Media Player a mono file plays from both speakers, so Alsa doing the same thing is not a real suprise I suppose, but I agree that I should at least have an option to play it in mono, and also, since we are all using hardware capable of more than stereo, I'd certainly like an option to choose what channel/channels aplay sends audio to. Where does one send enhancement requests for aplay/arecord? Thanks much for your help! I see Clemens has also responded today with some interesting info. Mark > > Frank >
