[Freeswitch-users] VAD Detection on Outbound Call

[Duane Gilbert]

We are migrating an application from a platform that had enhanced call
analysis builtin(Voice and Answering Machine Detection).  We used the
Voice Detection to determine when play information to the callee about
the inbound caller.  Waiting an arbitrary amount of time after the call
is answered solves the problem in most cases, but we had complaints that
the information was played too fast or not fast enough after the call
was answered.  Waiting for Voice Activity seems to satisfy those
complaints.

 

- Duane

 

From: freeswitch-users-bounces at lists.freeswitch.org
[mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of
Michael Collins
Sent: Thursday, July 14, 2011 7:34 PM
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] VAD Detection on Outbound Call

 

So you don't want to start the prompt at 500ms after you hear the
answer, but instead, until you hear some voice activity? Just curious -
what problem does that solve?

 

-MC

On Thu, Jul 14, 2011 at 3:29 PM, Duane Gilbert
<Duane.Gilbert at patlive.com> wrote:

Is there a way either using the Dialplan or Lua script to detect when
Voice Activity(VAD) is present on an outbound call?

 

I am using the group_confirm_key/group_confirm_file variables to prompt
the user after the outbound call is answered, but it would be nice to
not start the prompt until after Voice Activity is detected on the line.

 

- Duane

 


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