Can more than one program read from /dev/dsp at once?

jubo · Tux's lil' helper Joined: 30 Aug 2004 Posts: 87

Currently I get a "Device is Busy" error if I try to have more than one program recording microphone input. However, I want to be able to get more than one program to do this. Is there anyway ALSA can duplicate the sound device to another /dev node, so more than one program can use the sound input data at a time. Any suggestions?

Thanks

Taki · Posted: Sun Feb 12, 2006 9:13 am Post subject:

Hi.

I don't think you can have more than 1 /dev/dsp. All you need to do is creat a mixing device that will handle multiple requests to you sound card.

see:http://gentoo-wiki.com/HOWTO_ALSA_sound_mixer_aka_dmix
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jubo · Tux's lil' helper Joined: 30 Aug 2004 Posts: 87

Does dmix work for microphone input as well? My sound card already handles multiple output requests (like doing xmms and mplayer at the same time), but if I try to have multiple prorams recording I get the "Device is Busy".

jubo · Tux's lil' helper Joined: 30 Aug 2004 Posts: 87

I did a little more looking into dmix, and even after I specify it with my .asoundrc, I can only run one "arecord" at a time.

Taki · Posted: Sun Feb 12, 2006 11:30 am Post subject:

I tried running a record but all I get is: