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273 lines
12 KiB
273 lines
12 KiB
15 years ago
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<?xml version="1.0" encoding="UTF-8"?>
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<!-- ***********************************************************************
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SSMLtoSable.xsl
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Stylesheet for transforming SSML into SABLE markup.
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============
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Copyright : (C) 2004 by Paul Giannaros
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============
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Original author: Paul Giannaros <ceruleanblaze@gmail.com>
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***************************************************************************
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; version 2 of the License. *
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* *
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*************************************************************************** -->
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<!-- @todo create a doc detailing which parts of SSML this sheet can handle -->
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<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
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<xsl:output method="html" indent="no"/>
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<!-- speak: Indicates SSML markup. -->
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<xsl:template match="/speak">
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<SABLE><xsl:apply-templates/></SABLE>
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</xsl:template>
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<!-- sub: The word that the text sounds like as abbreviations
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can be pronounced differently. For example,
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<sub alias="doctor">Dr.</sub> smith lives at 32 johnson <sub alias="drive">dr.</sub> -->
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<xsl:template match="//sub">
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<xsl:choose>
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<xsl:when test="@alias">
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<xsl:value-of select="@alias"/>
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</xsl:when>
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<xsl:otherwise>
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<xsl:value-of select="."/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:template>
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<!-- p: Indicate a paragraph of text -->
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<xsl:template match="//p">
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<DIV TYPE="paragraph"><xsl:apply-templates/></DIV>
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</xsl:template>
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<!-- s: Forceefully indicate a sentence (Does not need to be used
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if full stops are present) -->
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<xsl:template match="//s">
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<DIV TYPE="sentence"><xsl:apply-templates/></DIV>
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</xsl:template>
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<!-- emphasis: Emphasize a word or group of words. -->
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<xsl:template match="//emphasis">
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<!-- SSML and SABLE both take the same values for their attributes -
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strong, moderate, none, reduced -->
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<EM TYPE="{@level}"><xsl:apply-templates/></EM>
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</xsl:template>
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<xsl:template match="//voice">
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<!-- This is turned off because if Festival lacks an installed voice to match a gender
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or voice name, it bombs out. argh!
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<xsl:call-template name="voice"><xsl:with-param name="a" select="@*" /></xsl:call-template> -->
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<xsl:apply-templates/>
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</xsl:template>
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<xsl:template name="voice">
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<xsl:param name="a" />
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<!-- Get the name of the tag we're creating and convert to a SABLE tag. -->
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<xsl:variable name="tag">
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<xsl:choose>
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<xsl:when test="name($a[1])='gender'">SPEAKER</xsl:when>
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<xsl:when test="name($a[1])='age'">SPEAKER</xsl:when>
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<xsl:when test="name($a[1])='name'">SPEAKER</xsl:when>
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<xsl:otherwise><xsl:value-of select="$a[1]"/></xsl:otherwise>
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</xsl:choose>
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</xsl:variable>
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<xsl:element name="{$tag}">
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<!-- Create the right attribute to go with element $tag. -->
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<xsl:choose>
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<!-- gender:
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The gender of the voice.
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Values such as male, female, and neutral are supported. -->
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<xsl:when test="name($a[1])='gender' and $a[1]='male'">
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<xsl:attribute name="GENDER">male1</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='gender' and $a[1]='female'">
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<xsl:attribute name="GENDER">female1</xsl:attribute>
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</xsl:when>
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<!-- If none of the above match, take the users selected value. -->
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<xsl:when test="name($a[1])='gender'">
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<xsl:attribute name="GENDER"><xsl:value-of select=" $a[1]"/></xsl:attribute>
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</xsl:when>
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<!-- age:
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The age of the voice.
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Positive integer values are supported. -->
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<xsl:when test="name($a[1])='age' and number($a[1]) < 10">
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<xsl:attribute name="AGE">child</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='age' and number($a[1]) < 20">
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<xsl:attribute name="AGE">teen</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='age' and number($a[1]) < 30">
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<xsl:attribute name="AGE">younger</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='age' and number($a[1]) < 50">
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<xsl:attribute name="AGE">middle</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='age'">
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<xsl:attribute name="AGE">older</xsl:attribute>
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</xsl:when>
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<!-- name:
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Voice name. Synth dependent. -->
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<xsl:when test="name($a[1])='name'">
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<xsl:attribute name="NAME"><xsl:value-of select=" $a[1]"/></xsl:attribute>
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</xsl:when>
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</xsl:choose>
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<!-- Recursively call ourself. -->
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<xsl:choose>
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<xsl:when test="$a[2]">
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<xsl:call-template name="voice"><xsl:with-param name="a" select="$a[position()>1]" /></xsl:call-template>
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</xsl:when>
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<xsl:otherwise>
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<xsl:apply-templates/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:element>
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</xsl:template>
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<xsl:template match="prosody">
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<!-- contour and duration not supported. -->
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<xsl:call-template name="prosody"><xsl:with-param name="a"
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select="@pitch|@rate|@volume|@range" />
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</xsl:call-template>
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</xsl:template>
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<xsl:template name="prosody">
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<xsl:param name="a" />
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<!-- Get the name of the tag we're creating and convert to a SABLE tag. -->
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<xsl:variable name="tag">
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<xsl:choose>
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<xsl:when test="name($a[1])='pitch'">PITCH</xsl:when>
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<xsl:when test="name($a[1])='rate'">RATE</xsl:when>
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<xsl:when test="name($a[1])='volume'">VOLUME</xsl:when>
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<xsl:when test="name($a[1])='range'">PITCH</xsl:when>
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<xsl:otherwise><xsl:value-of select="$a[1]"/></xsl:otherwise>
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</xsl:choose>
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</xsl:variable>
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<xsl:element name="{$tag}">
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<!-- Create the right attribute to go with element $tag. -->
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<xsl:choose>
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<!-- pitch:
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The pitch with which the text is spoken.
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Values such as x-high, high, low, etc. and percentages (+ or -)
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are supported. -->
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<xsl:when test="name($a[1])='pitch' and $a[1]='x-high'">
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<xsl:attribute name="BASE">70%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='pitch' and $a[1]='high'">
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<xsl:attribute name="BASE">40%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='pitch' and $a[1]='medium'">
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<xsl:attribute name="BASE">0%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='pitch' and $a[1]='low'">
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<xsl:attribute name="BASE">-40%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='pitch' and $a[1]='x-low'">
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<xsl:attribute name="BASE">-70%</xsl:attribute>
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</xsl:when>
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<!-- If none of the above match, take the users selected value. -->
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<xsl:when test="name($a[1])='pitch'">
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<xsl:attribute name="BASE"><xsl:value-of select=" $a[1]"/></xsl:attribute>
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</xsl:when>
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<!-- rate:
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The speed at which the text is spoken.
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Values such as x-fast, fast, slow, etc. and percentages (+ or -)
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are supported. -->
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<xsl:when test="name($a[1])='rate' and $a[1]='x-fast'">
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<xsl:attribute name="SPEED">70%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='rate' and $a[1]='fast'">
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<xsl:attribute name="SPEED">40%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='rate' and $a[1]='medium'">
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<xsl:attribute name="SPEED">0%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='rate' and $a[1]='slow'">
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<xsl:attribute name="SPEED">-40%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='rate' and $a[1]='x-slow'">
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<xsl:attribute name="SPEED">-70%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='rate'">
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<xsl:attribute name="SPEED"><xsl:value-of select=" $a[1]"/></xsl:attribute>
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</xsl:when>
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<!-- volume:
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The volume at which the text is spoken.
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Values such as x-loud, loud, quiet, etc. and percentages (+ or -)
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are supported. -->
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<xsl:when test="name($a[1])='volume' and $a[1]='x-loud'">
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<xsl:attribute name="LEVEL">70%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='volume' and $a[1]='loud'">
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<xsl:attribute name="LEVEL">50%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='volume' and $a[1]='medium'">
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<xsl:attribute name="LEVEL">0%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='volume' and $a[1]='soft'">
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<xsl:attribute name="LEVEL">-50%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='volume' and $a[1]='x-soft'">
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<xsl:attribute name="LEVEL">-70%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='volume' and $a[1]='silent'">
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<xsl:attribute name="LEVEL">-100%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='volume'">
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<xsl:attribute name="LEVEL"><xsl:value-of select=" $a[1]"/></xsl:attribute>
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</xsl:when>
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<!-- range:
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The volume at which the text is spoken.
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Values such as x-high, high, medium, low, x-low, etc. and percentages (+ or -)
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are supported. -->
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<xsl:when test="name($a[1])='range' and $a[1]='x-high'">
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<xsl:attribute name="RANGE">70%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='range' and $a[1]='high'">
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<xsl:attribute name="RANGE">40%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='range' and $a[1]='medium'">
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<xsl:attribute name="RANGE">0%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='range' and $a[1]='low'">
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<xsl:attribute name="RANGE">-40%</xsl:attribute>
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</xsl:when>
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<xsl:when test="name($a[1])='range' and $a[1]='x-low'">
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<xsl:attribute name="RANGE">-70%</xsl:attribute>
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</xsl:when>
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<!-- If none of the above match, take the users selected value. -->
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<xsl:when test="name($a[1])='range'">
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<xsl:attribute name="RANGE"><xsl:value-of select=" $a[1]"/></xsl:attribute>
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</xsl:when>
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</xsl:choose>
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<!-- Recursively call ourself. -->
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<xsl:choose>
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<xsl:when test="$a[2]">
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<xsl:call-template name="prosody"><xsl:with-param name="a" select="$a[position()>1]" /></xsl:call-template>
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</xsl:when>
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<xsl:otherwise>
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<xsl:apply-templates/>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:element>
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</xsl:template>
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</xsl:stylesheet>
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