Multiple sound outputs on linux

UltraMixer - ENGLISH Bug Reporting
1

I’m trying to work out how to use different sound outputs for each channel. In the UltraMixer settings the only option i have is /dev/dsp, my soundcard is an Audigy so i’d like to be able to use the rear channels as another output, how should i go about doing this?

(in /dev/snd there are several files that start with PCM, i’m guessing i have to create a /dev/dsp1 or something that points to those?)

Thanks

2

So ive found out that my alsa config supports the soundcard fine (at least i think)

aplay -D front /fat32/song.wav
aplay -D rear /fat32/song.wav

the above sends the sound to the correct outputs. Can i make a /dev/dsp1 that outputs to the “rear” channels?

3

Hi NicP,

you are right. That seems to be a missing feature. I’ll try to add it in 2.0.3.

best regards
Slajar

4

Has this support been added yet? I’m using 2.0.4.

Im only able to select /dev/dsp0 for playback and monitor. It doesnt split between front and rear channels on my Audigy 2 ZS.

Also when i try 2 soundcards /dsp0 and dsp1 i can select each for the playback and monitor but it crashes after playing for about 10 seconds, also the monitor buttons don’t seem to do anything. :frowning:

Any help would be appreciated. :smiley:

5

Hi biteme,

since we faced some serious stability problems on Linux we didn’t add ALSA for now. I think as we released 2.0.5 (which will increase the stability enomously :wink: ) I will start the ALSA implementation.
The crash when you tried to add one more /dev/dspX will actually been fixed in 2.0.5. We actually do some testing now and I hope we can release it pretty soon.

regards
Sl@jaR

6

Hi there,
I have the same problem as desribed here. I’ d like to use the Rear-channels of my sound card for monitor output but all I can select is /dev/dsp(). There are no other dsp-devices in /dev.

I’m using the nforce4-sound and ALSA version 1.0.12rc1
Ultramixer 2.0.8

thanks für any help

7

Hi TecKiller,

unfortunately, UltraMixer only supports OSS right now and OSS doesn’t support 5.1 sound cards. Exactly, it just supports stereo sound cards. If you use the ALSA OSS compatibility layer I think there is a possibility in ALSA to map /dev/dsp1 to the rear of your soundcard. If you have found a solution for this, some other UltraMixer users might be interessted in a small FAQ :wink:

regards
Sl@jaR