Dialog extension: "x-texttospeech"

The x-texttospeech dialog extension provides the ability to play a simple TTS string to the person on the line without having to invoke a fully fleshed out VXML dialog. There are a small number of parameters that allows the developer to customize the behavior of this dialog extension, which are:

termdigits: defines the dtmf keypress, (if any), that will halt the TTS playback, and generate a 'dialog.exit' event. The terminating character is available within the 'dialog.exit' event via the 'event$.values.termdigit'
text: defines the TTS string to be generated to the caller
voice: defines the TTS voice that will be used for rendering the TTS string

An example to this dialog extension in action is listed below for convenience.

Note: You must escape reserved URI characters such as the & and # signs.



<?xml version="1.0" encoding="UTF-8" ?>

<ccxml version="1.0">



<meta name="author" content="Jeff Menkel"/>

<meta name="copyright" content="2007 Voxeo Corporation"/>

<meta name="maintainer" content="YOUR_EMAIL@HERE.COM"/>



  <var name="initState" expr="'state_1'"/>

  <var name="MyCallID"/>



  <eventprocessor statevariable="initState">



    <transition event="connection.alerting" state="state_1">

      <assign name="MyCallID" expr="event$.connectionid"/>

      <send data="'MyEvent'" target="session.id"/>

    </transition>



    <transition event="MyEvent">

        <accept connectionid="MyCallID"/>

    </transition>



    <transition event="connection.connected" state="state_1">

      <log expr="'***** CALL WAS ANSWERED *****'"/>

      <dialogstart src="'null://?text=This is a test of the Text to Speech dialog extension&amp;termdigits=*'" type="'application/x-texttospeech'"/>

    </transition>





    <transition event="error.dialog.notstarted'" state="state_1">

        <log expr="'****** ERROR.DIALOGNOTSTARTED.NAME = ' + event$.name"/>

    </transition>





    <transition event="dialog.exit">

      <log expr="'***** CALL EXITING *****'"/>

      <log expr="'***** TERMINATING CHARACTER = ' + event$.values.termdigit"/>

      <exit/>

    </transition>



  </eventprocessor>

</ccxml>

To download the preceding code example, click texttospeech.zip.

ANNOTATIONS: EXISTING POSTS

romilly1

6/10/2010 1:00 AM (EDT)

Just a question: how do you get this (x-texttospeech) extension to automatically exit the dialog after reading the text (without having the caller press any keys)?

voxeoJeffK

6/10/2010 1:41 AM (EDT)

Hello,

x-texttospeech does exit on its own upon completion. Did you maybe mean x-fetchdigits? If not, can you test with the Application Debugger running, and attach the log file where x-texttospeech does not exit?

Regards,
Jeff Kustermann
Voxeo Support

SSA_Whispir

12/19/2010 7:39 PM (EST)

Just wondering how you add a pause (i.e. break) between words in the 'text' parameter?

voxeoadam

12/20/2010 2:36 AM (EST)

Hello,

Currently, there are only three features for this particular dialog extention: voice, termdigits, and text. If adding breaks is really a necessity, I'd suggest just using a normal VoiceXML dialog which plays a <prompt>. This way you can manipulate the TTS however you like, without the restrictions that CCXML TTS has.

I've only found a way to pause or break for VXML however. (see below)

[link=http://www.vxml.org/frame.jsp?page=break.htm]http://www.vxml.org/frame.jsp?page=break.htm[/link]

In the meantime, if there is any other questions that we can further help just feel free to let us know.

Regards
Adam Kong
Voxeo Support

[url=http://voxeo.com/prophecy]Download Prophecy 10[/url] | [url=http://docs.voxeo.com/prophecy/10.0/home.htm]Prophecy 10 Docs[/url]

voxeoadam

12/20/2010 3:24 AM (EST)

Hello,

I got one another way to add a pause in the text-to-speech: adding a inline pause with three dots as a pause, and hope this also can help you out. Following is one sample script:

[code]
<dialogstart src="'myfile.wav?termdigits=#&text= Thanks for using our product, and we ... ... will provide best service to you!'"
type="'application/x-texttospeech'"
dialogid="myDialogid"
connectionid="call_id"
/>
[/code]

In the meantime, if there is any other questions that we can further help just feel free to let us know.

Regards
Adam Kong
Voxeo Support

[url=http://voxeo.com/prophecy]Download Prophecy 10[/url] | [url=http://docs.voxeo.com/prophecy/10.0/home.htm]Prophecy 10 Docs[/url]

Dialog Extension: x-recordaudio

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