[Freeswitch-users] Detecting Energy Levels on a Channel with mod_lua

Mathieu Rene mrene_lists at avgs.ca
Mon Mar 1 14:59:31 PST 2010

An easy way is to do an average of the absolute value of each L16  
sample over a period of time. Im not quite sure how to access audio  
channels from within Lua but if you are in C you can use  
switch_core_session_read_frame() to get audio frames.

Mathieu Rene
Avant-Garde Solutions Inc
Office: + 1 (514) 664-1044 x100
Cell: +1 (514) 664-1044 x200
mrene at avgs.ca

On 1-Mar-10, at 5:29 PM, Michael Collins wrote:

> On Sun, Feb 28, 2010 at 3:36 AM, Matthew Fong <mattdfong at gmail.com>  
> wrote:
> Is there anyway to detect energy levels on a channel that is being  
> controlled by mod_lua? Please point me in the right direction if  
> there is. Thanks.
> Is there a way to do it on a channel that is not controlled by Lua?!
> -MC
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