Mixing sound

[Lars Engels]

On Wed, Oct 04, 2006 at 05:19:29PM +0700, Olivier Nicole wrote:
> Hi, 
> 
> I have an embded application running on 4.11. I cannot upgrade the
> system version. http://www.cs.ait.ac.th/laboratory/door/
> 
> 4.11 was using voxware (pre-OSS).
> 
> I am requested to add limited sound support to it (for blind user).
> 
> Now I am able to play a recorded sound, but some events may need to
> play 2 sounds at same time. How can I do that?

Hi Olivier,

take a look at:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/sound-setup.html

To use multiple channels set:

sysctl hw.snd.pcm0.vchans=4
sysctl hw.snd.maxautovchans=4

If that works for you, you can add it to /etc/sysctl.conf

-Lars
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