[Freeswitch-users] Getting real-time amplitude of a channel

[Michael Collins]

AFAIK there isn't anything pre-rolled that you can use. However, I know
that Tony's auto gain control (agc) logic checks the "volume" level coming
in on a channel. You might be able to look in mod_conference.c and see
where the agc calculates the incoming volume level and write an API that
displays that value.

I'd start by looking at the function check_agc_levels() and for references
to member->agc_volume_in_level. Hopefully that will give you a place to
start.

-MC

On Wed, Mar 14, 2012 at 10:26 AM, Matt Stockton <mstockton at harqen.com>wrote:

> Hi all,
>
> I am interested in providing a visualization of a channel in a conference.
> I am able to process the start talking and stop talking events from the
> conference, but I'm wondering, has anyone done anything that can get the
> real-time amplitude of a channel? I didn't see any built-in API commands to
> do this, but wondering if there's any modules or something else that I'm
> overlooking?  Or maybe now is the time for me to dig into the API
> documentation?
>
> Just curious if anyone has done something like this before, and if so, if
> you could guide me in the right direction.
>
> Thanks!
> Matt
>
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