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[csorlie at teldio.com]

Using voice activity detection (VAD) in FreeSWITCH, how might I then distinguish which side of a call any given TALK or NOTALK event relates to? I am interested not just that there is activity on the call, but interested also in which party on the call is speaking (or not).

Cam

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[brian at freeswitch.org]

If i'm not mistaken those events will have a member-id in them so you
can tell who they belong to.

/b

On Mar 1, 2009, at 12:01 PM, Cameron Sorlie wrote:

[red.rain.seven at gmai...]

Does the freeswitch VAD is able to distinguish ring tone from human voice?
The scenario is to originate a call to a IVR system(don't connect the other leg here yet) and dial DTMF to get to the designated extension number , once someone picks up and say hello ( detected by VAD) now release to connect the other leg of the call. The point is to hold the first leg till a real person picks up.

If it can't be done by VAD, how should I approach this function that I want to achieve.

Thanks

On Sun, Mar 1, 2009 at 1:15 PM, Brian West <brian@freeswitch.org (brian@freeswitch.org)> wrote:

[brian at freeswitch.org]

NO. You want something that people THINK exists and works well...
Reliable human/voice detection doesn't exist in ANY form.

/b

On Mar 1, 2009, at 8:20 PM, Henry Huang wrote:

[red.rain.seven at gmai...]

Well, I knew it would be some future fantasy for now..
If not human detection. I guess will try to use Dialplan Tools wait for silence to wait till the ring tone is finished ,then connect the other leg.






On Sun, Mar 1, 2009 at 6:28 PM, Brian West <brian@freeswitch.org (brian@freeswitch.org)> wrote:

[brian at freeswitch.org]

Usually ringing is done in early media... so the best bet would be to ignore_early_media=true

/b

On Mar 1, 2009, at 9:05 PM, Henry Huang wrote:

[red.rain.seven at gmai...]

ignore_early_media=true is not going to do the trick since once the IVR picks up the call on leg A, the ring tone is stopped and the IVR is going to play pre-recorded voice menu. And the freeswtich is going to send DTMF to reach a certain extension number say 101. Then the ring tone is going to start again while the IVR is going to dial the 101 extension(or even play moh while dialing). After extension 101 picks up, this is when I want the "originate" to connect call leg B on some other number.

On Sun, Mar 1, 2009 at 7:11 PM, Brian West <brian@freeswitch.org (brian@freeswitch.org)> wrote:

[msc at freeswitch.org]

On Mon, Mar 2, 2009 at 11:48 AM, Anthony Minessale
<anthony.minessale@gmail.com> wrote:

[woof at nortel.com]

Woof!

On Mon, 02 Mar 2009 19:32:53 -0500, Steve Underwood <steveu@coppice.org> wrote:

I just had a look through that patent. Its amazing. There is a lot of

[csorlie at teldio.com]

In a sense, you might say I did futz with mod_vmd ... to create mod_vad. There appeared to be just no (easy) way to modify the internal VAD code in the FreeSWITCH core (see switch_rtp.c) to identify the origins of voice activity. And rather than build into mod_vmd, which is a special purpose tool, a separate module for VAD seemed like a reasonable idea.

In short, the mod_vad which I've written up independently monitors the read and the write legs of the session it is run on, and tags each VAD_TALK and VAD_NOTALK event it fires with a user-supplied identification marker (a short string) for the leg which the event relates to. At the moment, the VAD algorithm is dead simple, and is much like the one in the core. I will be happy to submit this module, in a little while, after I've had a chance to make it perhaps a bit more useable outside of our own application context.

Cam

On Mon, Mar 2, 2009 at 5:43 PM, <freeswitch-users-request@lists.freeswitch.org (freeswitch-users-request@lists.freeswitch.org)> wrote:

[brian at freeswitch.org]

Kewl you can contribute via http://jira.freeswitch.org

/b

On Mar 5, 2009, at 9:41 AM, Cameron Sorlie wrote: