Re: [Linphone-developers] Adding half-duplex preemptive operation option to Linphone

[Pedro Sanchez]

From the documentation page:

#Enables echo limiter
#this basically consists in lowering the mic input (in software)
#when the speaker level is below a certain threshold
#the attenuation is made proportionnal to the speaker detected level

Shouldn't this be the other way around? lowering the mic input when the 
speaker level is *above* a certain level. That is, we mute the mic when 
the other end is talking, which is what I need.

--
Pedro


On 08/09/2011 09:29 AM, Simon Morlat wrote:
> Hi,
>
> This is already implemented. See the "Echo limiter" description on
> http://www.linphone.org/eng/documentation/dev/tuning-linphone.html
>
> You may need to set the el_force parameter to a greater value (100000)
> to cut voice entirely.
>
> Simon
>
> On 08/08/2011 18:07, Pedro Sanchez wrote:
> > Hello,
> >
> > We'd like to use linphone in an application that requires a
> > half-duplex preemptive operation mode to be available. By preemptive I
> > mean that active *voice* audio originating from the remote end of the
> > connection and detected as such locally will always enforce muting of
> > the local linphone client. Local linphone audio can only be delivered
> > to the remote end as long as no incoming *voice* audio is detected.
> >
> > Would anyone be willing to provide me with some guidelines on how
> > modify linphone to implement this feature? I'm only interested in the
> > core changes, I guess in the media streaming side of things, so that
> > linphone in console mode (linphonec) can use it. Supporting this
> > operation from the GUI front end is out of scope for me.
> >
> > Any help would be very much appreciated.
> >
> > Thanks,