Joel Roth <jo...@pobox.com> writes: > I don't think there is a problem with ecasound. > For comparison, you can try > > aplay -D <devicename> test.wav > > You get the device name from aplay -L. > Please also show the output from > > cat /proc/asound/cards > > With your ecasound examples, the -a argument is not necessary, and > selecting channels is not its purpose.
Now it works: $ ecasound -a:1,2,3 -i:sndfile,3canali.wav -o alsaplugin,2,0 ************************************************************************** * ecasound v2.9.1 (C) 1997-2014 Kai Vehmanen and others ************************************************************************** (eca-chainsetup) Chainsetup "untitled-chainsetup" (eca-chainsetup) NOTE: Real-time configuration, but insufficient privileges ... to utilize real-time scheduling (SCHED_FIFO). With small buffersizes, ... this may cause audible glitches during processing. (eca-chainsetup) "rt" buffering mode selected. (audioio_sndfile) Using libsndfile to open file "3canali.wav" for reading. (eca-chainsetup) NOTE: using existing audio parameters -f:s16_le,3,48000 ... for object 'sndfile' (tried to open with -f:s16_le,2,44100). (eca-chainsetup) Opened input "sndfile", mode "read". Format: s16_le, ... channels 3, srate 48000, interleaved (locked params). (eca-chainsetup) Opened output "alsaplugin", mode "write". Format: s16_le, ... channels 2, srate 48000, interleaved. - [ Connected chainsetup: "untitled-chainsetup" ] ------------------------ - [ Controller/Starting batch processing ] ------------------------------- - [ Engine - Driver start ] ---------------------------------------------- - [ Engine - Processing finished ] --------------------------------------- - [ Controller/Batch processing finished (0) ] --------------------------- - [ Controller/Processing stopped (cond) ] ------------------------------- - [ Engine exiting ] ----------------------------------------------------- (eca-control-objects) Disconnecting chainsetup: "untitled-chainsetup". So we could consider problem 1) solved. Let's try to go to problem 2). The above command properly sends channel 1 to loudspeaker 1 and channel 2 to loudspeaker 2, but it doesn't manage to send channel 3 into loudspeaker 3. Actually, the Behringer seems to behave in stereo mode. But the strange thing is that outputs `B' (i.e. 3 and 4) do not work at all and seems to be dead. So please help: how can I - if ever possible - send channel 3 to loudspeaker 3? And, more in general: is it possible, even with some other device, to achive what I want? Thanks, Rodolfo
