you can set-up a simple routing plugin in your .asoundrc like:

pcm.plug_convert2 {
        type plug
        slave.pcm your_soundcard
        ttable.0.0 1
}

this will route your 1 channel from your mono-file to the probably left
channel of your soundcard. you have to set up the rest as the hw-type and
ctl too.

____
joy

On Sat, 6 Apr 2002, Jimen Ching wrote:

> Hi all,
>
> I am working on a problem where I want to extract the left and right
> channels from a sound file.  I am running into a problem where I can not
> tell if the samples are from the left only, or the right only channels.
> I have a sound file that is mono, when I play this file through ALSA, the
> samples come out on both left and right speakers.  It seems either ALSA is
> sending the mono samples to both channels, or my soundcard is doing it.
> I am wondering if there is a way to control whether a mono sound file can
> be played to only one speaker using ALSA.
>
> Also, does anyone have a sound file that has one song on the left channel
> and another song on the right channel?  Does anyone know how to generate
> such a file from two mono files?
>
> Any help is greatly appreciated.
>
> --jc
>
> P.S.  I might be confusing the terms 'channels' and 'voices'.  I know some
> people and tools use them differently.  Basically, I am using the term
> 'channels' to mean the left and right parts of a file with stereo samples.
>
> --
> Jimen Ching (WH6BRR)      [EMAIL PROTECTED]     [EMAIL PROTECTED]
>
>
> _______________________________________________
> Alsa-devel mailing list
> [EMAIL PROTECTED]
> https://lists.sourceforge.net/lists/listinfo/alsa-devel
>


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