I'm looking at setting up a box/s to provide individual audio streams to 15 pairs of sterio speakers, Iv'e set up a successful demo machine with 5 x ens1371 cards + an onboard intel8x0 audio.
I have 2 questions if someone could please help.
1. Has anyone ever done this many outputs before? If so could they recommend some hardware, the software part is easy, however sourcing a suitable card here in .au is looking rather difficult.
2.Alsamixer seems to only be able to handle the first 4 cards running on the 5th or 6th card gives. alsamixer -c4
alsamixer: function snd_ctl_open failed for hw:4: No such file or directory
however aumix has no problems
/etc/init.d/aumix stop
Saving mixer settings: mixer, mixer1, mixer2, mixer3, mixer4, mixer5, muting.
/etc/init.d/aumix start
Restoring mixer settings: mixer, mixer1, mixer2, mixer3, mixer4, mixer5, done.
I had to create all the device nodes above 3,
ls -l dsp* lrwxrwxrwx 1 root audio 9 Apr 1 00:48 dsp -> /dev/dsp0 crw-rw---- 1 root audio 14, 3 Apr 1 00:48 dsp0 crw-rw---- 1 root audio 14, 19 Apr 1 00:48 dsp1 crw-rw---- 1 root audio 14, 163 Mar 31 14:18 dsp10 crw-rw---- 1 root audio 14, 35 Apr 1 00:48 dsp2 crw-rw---- 1 root audio 14, 51 Apr 1 00:48 dsp3 crw-rw---- 1 root audio 14, 67 Apr 1 02:33 dsp4 crw-rw---- 1 root audio 14, 83 Apr 1 02:44 dsp5 crw-rw---- 1 root audio 14, 99 Apr 1 02:45 dsp6
ls -l mixer* lrwxrwxrwx 1 root audio 11 Apr 1 00:48 mixer -> /dev/mixer0 crw-rw---- 1 root audio 14, 0 Apr 1 00:48 mixer0 crw-rw---- 1 root audio 14, 16 Apr 1 00:48 mixer1 crw-rw---- 1 root audio 14, 32 Apr 1 00:48 mixer2 crw-rw---- 1 root audio 14, 48 Apr 1 00:48 mixer3 crw-rw---- 1 root audio 14, 64 Apr 1 02:46 mixer4 crw-rw---- 1 root audio 14, 80 Apr 1 02:46 mixer5
ls -l audio* lrwxrwxrwx 1 root audio 11 Apr 1 00:48 audio -> /dev/audio0 crw-rw---- 1 root audio 14, 4 Apr 1 00:48 audio0 crw-rw---- 1 root audio 14, 20 Apr 1 00:48 audio1 crw-rw---- 1 root audio 14, 36 Apr 1 00:48 audio2 crw-rw---- 1 root audio 14, 52 Apr 1 00:48 audio3 crw-rw---- 1 root audio 14, 68 Apr 1 02:50 audio4 crw-rw---- 1 root audio 14, 84 Apr 1 02:50 audio5 crw-rw---- 1 root audio 14, 7 Mar 15 2002 audioctl
are the minor numbers correct? I have guessed them from the first 4.
I assume mixer works as aumix adjusts correctly.
Also, im using mpg123 to play the audio via snd-pcm-oss.
Regards--
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Robert Stanford
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