[Freeswitch-users] How to implement TTS barge-in using FS ESL

[Christopher Rienzo]

I'm not sure why it locks up for you.  It works for me and I know of at
least one other developer that got it all to work.

The way I do it in my custom APP is to set {start-input-timers=false} in
the speech recognition request and register an input callback function to
deal with the recognition and DTMF events.  The input callback reacts to
the start of speech and recognition complete events by stopping the
prompt.  At start of speech, the input timers are started and silence is
played until the final result arrives from the recognizer (no match, match,
etc).

An alternative way to do this is to watch for the recognition events over
ESL and react to them.



On Mon, Nov 14, 2011 at 9:19 AM, xl127 <x.liu at hw.ac.uk> wrote:

>  Hi Christopher,
>
> That will be great! Thanks and looking forward to your app!
>
> By the way, do you have a quick thoughts about the reasons the FS stucks
> when garge-in occurs?
> Otherwise if it is not straightforward to explain it,  just leave it alone
> until your new app comes out.
>
> Cheers,
> Xing
>
>
>
>
> On 14/11/11 13:23, Christopher Rienzo wrote:
>
> I'll write up a dialplan app this week to deal with this.  Getting tired
> of being asked the same question over and over since it's too complicated
> as is currently designed :)
>
>
>
>
>  On Mon, Nov 14, 2011 at 8:07 AM, xl127 <x.liu at hw.ac.uk> wrote:
>
>> Hi,
>>
>> The first problem I need to solve is that FS stucks when I speak during
>> the prompt is playing.
>> It looks like the recognizer is not listening any more. It works fine if
>> I speak after the playing prompt finishes.
>>
>> I tried Nuance and PocketSphinx recognizers and got same problem.
>>
>> Any idea about what the possible causes are?
>>
>> Thanks!
>> Xing
>>
>>
>> On 11/11/11 18:59, xl127 wrote:
>> > Hello,
>> >
>> > I found this is a question that was asked before by others, but I didn't
>> > find the answer.
>> >
>> > Anyway, I am using FS ESL outbound mode connecting to my IVR app,  using
>> > FS's "speak"
>> > and "detect_speech" to access Nuance MRCP V1 server.
>> >
>> > I want the user to be able to barge-in during the system's speaking.
>> > How could I implement it?
>> >
>> > I tried to specify "kill-on-barge-in=true" in the mrcp config profile.
>> > The barge-in doesn't work.
>> >
>> > With or without setting kill-on-barge-in, FS stops responding to my
>> > phone call and
>> > eventually it hangs up my call if I speak somthing (do the barge-in)
>> > during the system's speaking.
>> >
>> > I made a turn-by-turn loop in my app, the ASR/TTS works fine if I do not
>> > do barge-in ( I wait until the TTS finishes then I start to speak)
>> >
>> > Any advices please?
>> >
>> > Thanks!
>> > Xing
>> >
>> >
>> >
>>
>>
>>
>> --
>> Heriot-Watt University is a Scottish charity
>> registered under charity number SC000278.
>>
>> Heriot-Watt University is the Sunday Times
>> Scottish University of the Year 2011-2012
>>
>>
>>
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