rajendran.kolandasamy@wipro.com wrote:
>
> Hi All
>
> I have configured my linux m/c with RedHat Linux (6.1) to play sound. The
> problem what I'm facing is, in one of my application I want the sound card
> to play and record sound concurrently(Duplex mode). To make my soundcard
> duplex, is there any drivers.
>
> To test the duplex cpability I have done the following process.
>
> 1. In one shell I executed the following command
> $rec raj.wav
> 2. In another shell
> $play xyz.wav (It can be any Sound file *.au,*.wav)
>
> The result of the second command is an error
> like:
> sox: Can't open output file '/dev/dsp': Device or resource busy
>
> I too understand that its taking same device for play and rec.
> But Mic In and Spk out of the sound cards are different, is there any way to
> configure any other device for Mic In like /dev/mic or something.
>
> Expecting reply at the earliest.
"free" oss modules in kernel work only in "half duplex"
to use full dupley you must pay oss for full version :(
try alsa modules instead http://www.alsa-project.org/
I think that are even better than oss but You will have to
use/recompiles some programs to use alsa
Zoran
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