radio testing, press to talk hack
jg at laptop.org
Mon Mar 26 16:10:50 EDT 2007
We've been thinking about switching over to base things on Pulseaudio at
Keep us posted.
I had a conversation at LCA with Lennart on the topic.
If it goes well for you, we'll see about interfacing CSound to use it.
On Mon, 2007-03-26 at 12:49 -0700, Brian Cavagnolo wrote:
> Hello James,
> > I've set up a script that lets me "press to talk" into the microphone
> > of a unit and have the sound come out the speakers of all the other
> > units in the mesh. Sort of like how a radio transceiver works.
> I'm working on a similar (okay, practically identical) application.
> The target is a mesh network very similar to the OLPC's. The
> implementation depends on Pulse Audio, and is based on the RTP modules
> included therewith. Pulse Audio handles all the mixing, so
> simultaneous talkers are supported. I call the modules the PTT (i.e.,
> push-to-talk) modules. I've posted the source code along with a
> README and a simple python script to control it. The python script
> depends on pygtk to paint the push-to-talk button. You can check it
> out at:
> So far, I've played with it over two mesh nodes. Performance is
> tolerable. I expect to refine it over the next few weeks. Thoughts,
> opinions, and patches are welcome.
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