[Freeswitch-dev] Stereo support?

Xijing Dai dxj19831029 at gmail.com
Thu Dec 13 18:18:11 MSK 2012

On Thu, Dec 13, 2012 at 6:01 PM, Rick van Rein <rick at openfortress.nl> wrote:

> Hey,
> > Have anyone try to implement stereo support in freeswitch to streaming
> the
> > music?
> It'd also be a great asset to conference calls if we could hear the people
> "in the room" each talk from their position.  Add stereo microphones and it
> is even possible to "look at people" and direct speech more loudly their
> way.
> This is more sensational than you can imagine :- I once ate in a restaurant
> where the situation of being blind was simulated through absolute darkness.
> I was struck by how instinctively the mind registers if someone is looking
> at
> you while speaking, almost as if it has once been useful for our defense
> or so.
> I think this sensation could make an incredible impact on the concept of a
> conference call, and make it come *much* closer to a live conversation.

Great idea. I did have a look at conference algorithm. It's first added up
all mic
voice wave and than minus listener's voice from it. By this mean, we could
increase volume of voice of whom looked at listener and added up before
sent the wav to listeners.

However, the difficult part is how to figure out if someone is looked at

> I tried, but only 1 channel is hardcoded inside freeswitch code
> i can't make it work properly, just wonder if any1 tried before?

Can't answer that, just motivate it as a more generally useful idea.
> Ciao,
>  -Rick
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