voicexml elements

VoiceXML 2.1 Development Guide

<prosody> element

The prosody element replaces the non-compliant pros element from VXML 1.0, and allows the developer to change several aspects of the TTS output to allow for custom tailoring of prompts to sound more naturalistic to the caller. Do note that SSML tags are ignored by some of the available TTS engines, while some engines use their own non-compliant markup. Check the Text-To-Speech appendices for additional details.

usage

<prosody contour="CDATA" duration="CDATA" pitch="CDATA" range="CDATA" rate="CDATA" volume="CDATA">

attributes

contour	Data Type: CDATA	Default: Optional
	The contour attribute denotes the pitch contour for the text nested within the parent element. This attribute is non-functional on all TTS platforms, (Speechify and Rhetorical).
duration	Data Type: CDATA	Default: Optional
	The duration element specifies the time , (in seconds or milliseconds) in which to read the enclosed text.
pitch	Data Type: CDATA	Default: Optional
	The pitch attribute denotes the level and intensity of the TTS output.
range	Data Type: CDATA	Default: Optional
	The range attribute specifies the range of the pitch for the text enclosed. This attribute is non-functional on all TTS platforms, (Speechify and Rhetorical).
rate	Data Type: CDATA	Default: Optional
	The rate attribute denotes the rate at which the enclosed TTS is read to the caller.
volume	Data Type: CDATA	Default: Optional
	The volume attribute specifies the volume of speech output.

shadow variables

none

parents

<audio> <choice> <emphasis> <enumerate> <paragraph> <prompt> <sentence>

children

none

code samples

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

<vxml version = "2.1">

<meta name="author" content="Matthew Henry"/>
<meta name="copyright" content="2005 voxeo corporation"/>
<meta name="maintainer" content="YOUR_EMAIL@HERE.com"/>

<property name="nuance.core.tts.ResourceName" value="en-US.F019" />

<form id="F_1">

<block>
<prompt>
<prosody duration="8000ms">
Purple Haze, was in my brain.
</prosody>

<prosody duration="50ms">
Lately things dont seem the same.
</prosody>

<prosody rate="slow">
Acting funny, and I dont know why.
</prosody>

<prosody rate="fast">
Excuse me, while I kiss the sky!
</prosody>

<prosody volume="soft">
Purple Haze, all around
</prosody>

<prosody volume="loud">
Dont know if I am coming up or down.
</prosody>

<prosody pitch="low">
Am I happy, or in misery?
</prosody>

<prosody pitch="high">
Whatever it is, that girl put a spell on me!
</prosody>
</prompt>
</block>

</form>

</vxml>

additional links

W3C SSML 1.0 Specification

ANNOTATIONS: EXISTING POSTS

mallu

11/17/2004 11:00 AM (EST)

Prosody works with Rhetorical TTS Engine...
http://docs.voxeo.com/voicexml/2.0/frame.jsp?page=appendixn.htm

jimjetjock

8/5/2005 7:27 PM (EDT)

Ah the many talents of Mr. Henry. Not just a technocrat, but a poet!