NOTE-ssml-sayas-20050526
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>SSML 1.0 say-as attribute values</title>
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a.adef {
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}
a.aref {
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}
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<div class="head">
<p><a href="http://www.w3.org/"><img height="48" alt="W3C"
src="http://www.w3.org/Icons/w3c_home" width="72" /></a></p>
<h1 class="notoc" id="h1">SSML 1.0 say-as attribute values</h1>
<h2 class="notoc" id="date">W3C Working Group Note 26 May 2005</h2>
<dl>
<dt>This version:</dt>
<dd><a
href="http://www.w3.org/TR/2005/NOTE-ssml-sayas-20050526">http://www.w3.org/TR/2005/NOTE-ssml-sayas-20050526</a></dd>
<dt>Latest version:</dt>
<dd><a
href="http://www.w3.org/TR/ssml-sayas">http://www.w3.org/TR/ssml-sayas</a></dd>
<dt>Previous version:</dt>
<dd>This is the first version.</dd>
<dt><br />
Authors:</dt>
<dd>Daniel C. Burnett, Invited Expert (Editor)</dd>
<dd>Paolo Baggia, Loquendo (Editor)</dd>
<dd>James Barnett, Aspect</dd>
<dd>An Buyle, ScanSoft</dd>
<dd>Ellen Eide, IBM</dd>
<dd>Luc Van Tichelen, ScanSoft</dd>
</dl>
<p class="copyright"><a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
©2005 <a href="http://www.w3.org/"><acronym
title="World Wide Web Consortium">W3C</acronym></a><sup>®</sup> (<a
href="http://www.csail.mit.edu/"><acronym
title="Massachusetts Institute of Technology">MIT</acronym></a>, <a
href="http://www.ercim.org/"><acronym
title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>,
<a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
<a
href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document
use</a> rules apply.</p>
<hr title="Separator from Header" />
</div>
<h2 class="notoc" id="abstr"><a id="abstract"
name="abstract">Abstract</a></h2>
<p>The say-as element in SSML 1.0 is considered one of the most useful
elements of the language. However, SSML 1.0 does not define the values of the
attributes of this element. This Note provides definitions for these
attributes that cover many of the most common use cases for the say-as
element.</p>
<h2 class="notoc" id="status">Status of this Document</h2>
<p><em>This section describes the status of this document at the time of its
publication. Other documents may supersede this document. A list of current
W3C publications and the latest revision of this technical report can be
found in the <a href="http://www.w3.org/TR/">W3C technical reports index</a>
at http://www.w3.org/TR/.</em></p>
<p>This is the 26 May 2005 W3C Working Group Note of "SSML 1.0 say-as
attribute values". There is general agreement within the Working Group that
the attribute values defined here are the most critical ones and are useful
as defined; however, there is interest both in designing additional
definitions and in alternate definitions to some of those provided. Although
the content may of course change before being introduced into a
Recommendation-track document, the Working Group believes that the
publication of this Note at this time may assist vendors in moving towards a
common implementation rather than away.</p>
<p>The public is invited to send comments to the Working Group's public
mailing list <a href="mailto:www-voice@w3.org">www-voice@w3.org</a> (<a
href="http://lists.w3.org/Archives/Public/www-voice/">archive</a>). See <a
href="http://www.w3.org/Mail/">W3C mailing list and archive usage
guidelines</a>. Comments received may be taken into consideration if the
material in this Note is used in some form in the creation of a
Recommendation-track document.</p>
<p>This document has been produced as part of the <a
href="http://www.w3.org/Voice/Activity.html">W3C Voice Browser Activity</a>,
following the procedures set out for the <a
href="http://www.w3.org/Consortium/Process/">W3C Process</a>. The authors of
this document are members of the <a
href="http://www.w3.org/Voice/Group/">Voice Browser Working Group</a> (<a
href="http://cgi.w3.org/MemberAccess/AccessRequest">W3C Members only</a>).</p>
<p>This document was produced under the <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004
W3C Patent Policy</a>. The Working Group maintains a <a rel="disclosure"
href="http://www.w3.org/2001/09/voice-disclosures.html">public list of patent
disclosures</a> relevant to this document; that page also includes
instructions for disclosing [and excluding] a patent. An individual who has
actual knowledge of a patent which the individual believes contains Essential
Claim(s) with respect to this specification should disclose the information
in accordance with <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section
6 of the W3C Patent Policy</a>.</p>
<p>Publication as a Working Group Note does not imply endorsement by the W3C
Membership. This is a draft document and may be updated, replaced or
obsoleted by other documents at any time. It is inappropriate to cite this
document as other than work in progress.</p>
<h2 id="toc"><a id="S0" name="S0">0.</a> Table of Contents</h2>
<ul class="toc">
<li class="tocline">1. <a href="#S1">Introduction</a></li>
<li class="tocline">2. <a href="#S2">Extension mechanism</a></li>
<li class="tocline">3. <a href="#S3">Defined interpret-as values</a>
<ul class="toc">
<li class="tocline">3.1 <a href="#S3.1">Date</a></li>
<li class="tocline">3.2 <a href="#S3.2">Time</a></li>
<li class="tocline">3.3 <a href="#S3.3">Telephone number</a></li>
<li class="tocline">3.4 <a href="#S3.4">Character string</a></li>
<li class="tocline">3.5 <a href="#S3.5">Cardinal number</a></li>
<li class="tocline">3.6 <a href="#S3.6">Ordinal number</a></li>
</ul>
</li>
<li class="tocline">4. <a href="#S4">References</a></li>
<li class="tocline">5. <a href="#S5">Acknowledgments</a></li>
</ul>
<h2 id="S1h"><a id="S1" name="S1">1.</a> Introduction</h2>
<p>The Speech Synthesis Markup Language (SSML) [<a href="#ref-ssml">SSML</a>]
provides a variety of markup elements to direct the behavior of a speech
synthesizer in its processing of text to be spoken. One of the features in
this language is the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#S3.1.8"><code
class="elt">say-as</code></a> element [<a href="#ref-ssml">SSML §3.1.8</a>],
which provides for semantic tagging of content to assist the processor in
disambiguation of ambiguous input or to simplify authoring in common cases
where the processor knows how to perform the conversion of certain types of
content into orthographic text for the target language. However, SSML 1.0
does not define the values of the attributes of this element, leaving open
the questions of what standard content types might exist and how extensions
beyond those types might be introduced. This Note fills in the gap by</p>
<ol>
<li>defining how standard content types are denoted and distinguished from
extensions, and</li>
<li>providing definitions for these attributes that cover many of the most
common use cases for the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> element.</li>
</ol>
<h2 id="S2h"><a id="S2" name="S2">2.</a> Extension mechanism</h2>
<p>In addition to the standardized <a href="#adef_interpret-as"
class="aref">interpret-as</a> values defined in <a href="#S3">Section 3</a>,
vendors will likely wish to add their own. In discussing what changes might
be necessary to SSML 1.0 to support this extensibility, the following
criteria were established:</p>
<ol>
<li>Backwards compatibility with <a
href="http://www.w3.org/TR/2004/REC-voicexml20-20040316/#dmlABuiltins">VoiceXML
built-in interpret-as values</a> [<a href="#ref-vxml">VXML</a> Appendix
P] was essential</li>
<li>The group preferred that all say-as capability be accessible via the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> element so that processors will at least
recognize extensions to be say-as extensions.</li>
<li>A clear distinction between W3C-defined values and vendor-specific
values would be made</li>
</ol>
<p>To satisfy these criteria, the following further definition of the <a
href="#adef_interpret-as" class="aref">interpret-as</a> attribute is
provided:</p>
<blockquote>
<p>The <a id="adef_interpret-as" name="adef_interpret-as"
class="adef">interpret-as</a> attribute is a <a
href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/#QName"><strong>QName</strong></a>
[<a href="#ref-schema2">SCHEMA2 §3.2.18</a>]. A QName in the attribute's
content is expanded into an expanded-name using the namespace declarations
from the expression context. This is the same way expansion is done for
element type names in start and end-tags except that the default namespace
declared with xmlns is not used: if the QName does not have a prefix, then
it is not considered to be in any namespace (this is the same way attribute
names are expanded). It is an <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-error">error</a>
[<a href="#ref-ssml">SSML §1.5</a>] if the QName both does not have a
prefix and is not explicitly defined in this document as a legal value. It
is an <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-error">error</a>
if the QName has a prefix for which there is no namespace declaration in
the expression context.</p>
</blockquote>
Here is an example of how prefixes are expected to work:
<pre class="example"><?xml version="1.0"?>
<speak version="1.0" xmlns="http://www.w3.org/2001/10/synthesis"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3.org/2001/10/synthesis
http://www.w3.org/TR/speech-synthesis/synthesis.xsd"
xmlns:example="http://www.example.com/say-as"
xmlns:vxml="http://www.w3.org/2001/vxml"
xml:lang="en-US">
<p>This is a W3C-defined date:
<say-as interpret-as="date" format="dm">4/6</say-as>.
This is a VoiceXML date:
<say-as interpret-as="vxml:date">????0604</say-as>.
This is an example dot com date:
<say-as interpret-as="example:date" format="weekandday">23/5</say-as>.
</p>
</speak></pre>
<h2 id="S3h"><a id="S3" name="S3">3.</a> Defined interpret-as values</h2>
<p>The following <a href="#adef_interpret-as" class="aref">interpret-as</a>
values are defined to be legal values. These values must not be prefixed.</p>
<table align="center" cellpadding="2" border="2"
summary="List of interpret-as values and the sections in which they are defined.">
<tbody>
<tr>
<td><strong><a href="#adef_interpret-as" class="aref">interpret-as</a>
value</strong></td>
<td align="center"><strong>Defined in section</strong></td>
</tr>
<tr>
<td><code>date</code></td>
<td align="center"><a href="#S3.1">3.1</a></td>
</tr>
<tr>
<td><code>time</code></td>
<td align="center"><a href="#S3.2">3.2</a></td>
</tr>
<tr>
<td><code>telephone</code></td>
<td align="center"><a href="#S3.3">3.3</a></td>
</tr>
<tr>
<td><code>characters</code></td>
<td align="center"><a href="#S3.4">3.4</a></td>
</tr>
<tr>
<td><code>cardinal</code></td>
<td align="center"><a href="#S3.5">3.5</a></td>
</tr>
<tr>
<td><code>ordinal</code></td>
<td align="center"><a href="#S3.6">3.6</a></td>
</tr>
</tbody>
</table>
<h3 id="impl">Implementation remarks</h3>
<p>SSML [<a href="#ref-ssml">SSML</a>] describes how illegal and/or malformed
input, the presence or absence of the <code class="att">format</code>
attribute, and the presence or absence of the <code class="att">detail</code>
attribute are to be treated by the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a>. The descriptions there apply to all of the <a
href="#adef_interpret-as" class="aref">interpret-as</a> values in this
section. It is especially worth noting that a <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> should pronounce the contained text in a manner in which such
content is normally produced for the language. Although the exact way content
is read cannot be controlled by the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> element, the processor should read it in a way that
is applicable for the active locale or language.</p>
<p>Additionally, if the <a href="#adef_interpret-as"
class="aref">interpret-as</a> and <code class="att">format</code> attributes
do not specify additional or different information than what the processor
would have inferred automatically, then there should be no change in the
pronounciation.</p>
<p>Note that some of the <a href="#adef_interpret-as"
class="aref">interpret-as</a> value definitions include lexical token
definitions to assist in explaining values of the <code
class="att">format</code> and <code class="att">detail</code> attributes.
There is no requirement that content adhere to these lexical representations.
However, a processor that supports a particular <a href="#adef_interpret-as"
class="aref">interpret-as</a> value should properly interpret content
matching the lexical patterns given.</p>
<p>Finally, note that the additional information the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> element provides to the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> may be useful in interpreting text outside the content of the
element. In this example,<br />
<br />
<code>... occurred on <say-as interpret-as="date"
format="mdy">12/26/04</say-as> at <say-as interpret-as="time"
format="hms24">01:59:59</say-as> PST ...</code> <br />
<br />
the knowledge of the date and time data may assist the processor in
determining that "PST" is to be interpreted as a time zone indicator.</p>
<h3 id="S3.1h"><a id="S3.1" name="S3.1">3.1</a> <a name="datevalue"
id="datevalue">Date</a></h3>
<p>Specifying "<code>date</code>" as the <code
class="att">interpret-as</code> value indicates that the contained text is a
Gregorian calendar date. Note that the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> element then only gives a hint that the content is a
Gregorian calendar date.</p>
<h3 id="S3.1format">The <code class="att">format</code> attribute</h3>
<p>The optional <code class="att">format</code> attribute can be used to
indicate the format of a "<code>date</code>" string. In general, the format
is a sequence of one or more digit groups, called fields, that are separated
by a separator character. The same character must be used to delimit all
fields in a date string. At least three separator characters must be
supported: hyphen (-), forward slash (/), and dot (.). More details are
specified under the section <a href="#basic_date_tokens">"Basic tokens of a
date string"</a>.</p>
<p>The <code class="att">format</code> attribute only indicates which fields
are present and how they are ordered. Without an indication of the order the
processor would sometimes not be able to unambiguously determine the
underlying calendar date, e.g. "1/2/2004" could correspond with "February 1,
2004" or "January 2, 2004".</p>
<h3 id="S3.1Schema">Note on XML Schema date types</h3>
<p>Note that the "<code>date</code>" formats specified here do not correspond
with XML Schema [<a href="#ref-schema2">SCHEMA2</a>] or ISO 8601 [<a
href="#ref-ISO8601">ISO 8601:2000</a>] dates types. This is because the
purpose of the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> date type is different: it is to be able to correctly
interpret date strings that are written in formats that are commonly used in
human readable documents. The <code class="att">format</code> attribute is
typically used to help the processor to disambiguate between possible
interpretations (e.g. day-month versus month-day).</p>
<p>The XML Schema and ISO 8601 date types are not sufficient because the SSML
date strings are not necessarily in a canonical format (support for extra
separator characters besides dashes and multiple field orderings). Moreover,
<a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processors</a> [<a href="#ref-ssml">SSML §1.5</a>] need to be able to
process semantically invalid dates (like February 31) which XML Schema does
not support.</p>
<h3 id="S3.1Impl">Implementation remarks</h3>
<p>Since "<code>date</code>" contents are pronounced in a manner appropriate
for the language, it is possible for the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> to reorder the fields of a date if this results in a commonly
used pronounciation. For example, the date 01/02/02 tagged as having the
"<code>dmy</code>" (day-month-year) format in en-US context could be
pronounced as "February, the first, zero two".<br />
However, for "date" strings that a processor would correctly interpret
without a say-as hint, the addition of the appropriate say-as information
should not alter the way in which the date is pronounced.</p>
<h3 id="S3.1formats">The possible formats</h3>
<h4 id="S3.1tokens"><a id="basic_date_tokens" name="basic_date_tokens">Basic
tokens of a date string</a></h4>
<p>The following basic lexical tokens are used for dates:</p>
<dl>
<dt><code>[Day]: (0?[1...9]) | [10...31]</code></dt>
<dd>(one or two digits, optional leading zeros)</dd>
<dt><code>[Month]: (0?[1...9]) | [10...12]</code></dt>
<dd>(one or two digits, optional leading zero)</dd>
<dt><code>[Year]: (0?0?0?[0...9]) | (0?0?[10...99]) | (0?[100..999]) |
([1000..9999])</code></dt>
<dd>(one to four digits, optional century and optional leading zeros)</dd>
<dt><code>[Date Field Separator]: - | / | .</code></dt>
<dd>(hyphen, forward slash, or dot character)</dd>
</dl>
<p>Note that no white space is allowed inside a date string. Other single
character separators may be supported at the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a>'s discretion.</p>
<h4 id="S3.1mdy">Format: <code>mdy</code></h4>
<h5 id="S3.1mdylex">Lexical representation:</h5>
<code>[Month][Date Field Separator][Day][Date Field Separator][Year]</code>
<h5 id="S3.1mdyexamples">Examples:</h5>
<p><code><say-as interpret-as="date"
format="mdy">3/6/02</say-as></code> <br />
should be interpreted as the 6th of March, 02.</p>
<p><code><say-as interpret-as="date
format="mdy">09/21/2001</say-as></code> <br />
should be interpreted as the 21st of September, 2001.</p>
<h4 id="S3.1dmy">Format: <code>dmy</code></h4>
<h5 id="S3.1dmylex">Lexical representation:</h5>
<code>[Day][Date Field Separator][Month][Date Field Separator][Year]</code>
<h5 id="S3.1dmyexamples">Example:</h5>
<p><code><say-as interpret-as="date"
format="dmy">01/02/1960</say-as></code> <br />
should be interpreted as February first, 1960.</p>
<h4 id="S3.1ymd">Format: <code>ymd</code></h4>
<h5 id="S3.1ymdlex">Lexical representation:</h5>
<code>[Year][Date Field Separator][Month][Date Field Separator][Day]</code>
<h5 id="S3.1ymdexamples">Example:</h5>
<p><code><say-as interpret-as="date"
format="ymd">1960-02-01</say-as></code> <br />
should be interpreted as February first, 1960.</p>
<h4 id="S3.1md">Format: <code>md</code></h4>
<h5 id="S3.1mdlex">Lexical representation:</h5>
<code>[Month][Date Field Separator][Day]</code>
<h5 id="S3.1mdexamples">Example:</h5>
<p><code><say-as interpret-as="date"
format="md">11/12</say-as></code> <br />
should be interpreted as November twelfth.</p>
<h4 id="S3.1dm">Format: <code>dm</code></h4>
<h5 id="S3.1dmlex">Lexical representation:</h5>
<code>[Day][Date Field Separator][Month]</code>
<h4 id="S3.1ym">Format: <code>ym</code></h4>
<h5 id="S3.1ymlex">Lexical representation:</h5>
<code>[Year][Date Field Separator][Month]</code>
<h4 id="S3.1my">Format: <code>my</code></h4>
<h5 id="S3.1mylex">Lexical representation:</h5>
<code>[Month][Date Field Separator][Year]</code>
<h4 id="S3.1d">Format: <code>d</code></h4>
<h5 id="S3.1dlex">Lexical representation:</h5>
<code>[Day]</code>
<h4 id="S3.1m">Format: <code>m</code></h4>
<h5 id="S3.1mlex">Lexical representation:</h5>
<code>[Month]</code>
<h4 id="S3.1y">Format: <code>y</code></h4>
<h5 id="S3.1ylex">Lexical representation:</h5>
<code>[Year]</code>
<h3 id="S3.2h"><a id="S3.2" name="S3.2">3.2</a> <a id="time"
name="time">Time</a></h3>
<p>Specifying "<code>time</code>" as the <a href="#adef_interpret-as"
class="aref">interpret-as</a> value indicates that the contained text is a
time. The intention is to cover most formats for time that might occur in a
written document. Note that this format covers wall clock time only, not
durations or time ranges.</p>
<h3 id="S3.2Format">The <code class="att">format</code> attribute</h3>
<p>The optional <code class="att">format</code> attribute can be used to
indicate the format of a "<code>time</code>" string. In general, the format
is a sequence of one or more digit groups, called fields, that are separated
by a separator character. The same character must be used to delimit all
fields in a time string. At least one separator character must be supported:
the colon (:). <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">Synthesis
processors</a> may optionally support other separators (such as an "h" to
separate the hour from the minute in French).</p>
<p>Note that the "<code>time</code>" formats specified here do not correspond
to ISO 8601 [<a href="#ref-ISO8601">ISO 8601:2000</a>] time types. This is
because the purpose of the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> time type is different; it is to allow a <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> to be able to correctly interpret as times strings commonly
written in human-readable documents.</p>
<h3 id="S3.2Impl">Implementation remarks</h3>
<p>Note that to avoid complications between mistaking a time qualifier for a
time zone, the time zones are not included in the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> time format. If a time zone is to be specified, it
should be done outside the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> element, as in the example below:</p>
<code>The time is <say-as interpret-as="time" format="hms12"> 10:00 AM
</say-as> PST.</code>
<p>The <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> may then, knowing that the content was a time, use that
knowledge in interpreting the following "PST", for example as a time zone
designation.</p>
<h3 id="S3.2formats">The possible formats</h3>
<h4 id="S3.2tokens">Basic tokens of a time string</h4>
<p>The following basic lexical tokens are used in the format definitions that
follow:</p>
<dl>
<dt><code>[hour]</code></dt>
<dd>an integer in the range [0-23]. Optional leading zero for hours less
than 10.</dd>
<dt><code>[minute]</code></dt>
<dd>a two digit integer in the range [00-59].</dd>
<dt><code>[second]</code></dt>
<dd>a number in the range [0-60]. Leading zeros for seconds less than 10
are required. The number may be real-valued with arbitrary
precision.<br />
e.g. 13:00:15.752 and 13:00:15,752 mean "15.752 seconds after 1 o'clock
in the afternoon."<br />
The value 60 is used only to specify a "leap second" which occurs every
few years. See [<a href="#ref-schema2">SCHEMA2</a> Appendix D.1] for
details on the value 60.</dd>
<dt><code>[qualifier]</code></dt>
<dd>one of the following strings: "AM", "A.M.", "am", "a.m.", "A", "a",
"PM", "P.M.", "pm", "p.m.", "P", "p"</dd>
<dt><code>[Time Field Separator]</code></dt>
<dd>colon (':') , dot ('.'), or empty string ("")<br />
Other single character separators may be supported at the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a>'s discretion but must be documented.</dd>
<dt><code>[Qualifier Separator]</code></dt>
<dd>either white space or an empty string</dd>
</dl>
<h4 id="S3.2hms24">Format: <code>hms24</code></h4>
<p>This is 24-hour (military) time format where the hour 00 corresponds to
midnight and 23 corresponds to 11 o'clock in the evening.</p>
<p>The <code>[minute]</code> field and its preceding <code>[Time Field
Separator]</code> are jointly optional.</p>
<p>The <code>[second]</code> field and its preceding <code>[Time Field
Separator]</code> are jointly optional if the <code>[minute]</code> field is
specified. The <code>[second]</code> field is not allowed if the
<code>[minute]</code> field is not specified.</p>
<h5 id="S3.2hms24lex">Lexical representation</h5>
<code>[hour]([Time Field Separator][minute]([Time Field
Separator][second])?)?</code>
<h5 id="S3.2hms24examples">Examples</h5>
<p><code><say-as interpret-as="time"
format="hms24">00:00:00</say-as></code> <br />
should be interpreted as midnight</p>
<p><code><say-as interpret-as="time"
format="hms24">000000</say-as></code> <br />
should be interpreted as midnight</p>
<p><code><say-as interpret-as="time"
format="hms24">12:00:00</say-as></code> <br />
should be interpreted as noon</p>
<p><code><say-as interpret-as="time"
format="hms24">9:21:30</say-as></code> <br />
should be interpreted as 21 minutes and 30 seconds past the hour of 9 in the
morning</p>
<p><code><say-as interpret-as="time"
format="hms24">01:59:59</say-as></code> <br />
should be interpreted as 1 second before 2 o'clock in the morning</p>
<p><code><say-as interpret-as="time"
format="hms24">19:21:30.1</say-as></code> <br />
should be interpreted as 21 minutes and 30.1 seconds past the hour of 7 in
the evening</p>
<p><code><say-as interpret-as="time"
format="hms24">12.00</say-as></code> <br />
should be interepreted as noon</p>
<p><code><say-as interpret-as="time"
format="hms24">00:01</say-as></code> <br />
should be interpreted as one minute past midnight</p>
<p><code><say-as interpret-as="time"
format="hms24">1</say-as></code> <br />
should be interpreted as one o'clock in the morning</p>
<p><code><say-as interpret-as="time"
format="hms24">115</say-as></code> <br />
should be interpreted as 15 minutes past one in the morning</p>
<p><code><say-as interpret-as="time"
format="hms24">07.00</say-as></code> <br />
should be interpreted as 7 o'clock in the morning</p>
<h4 id="S3.2hms12">Format: <code>hms12</code></h4>
<p>This is 12-hour time format where the hours are restricted to the range 01
through 12.</p>
<p>The <code>[minute]</code> field and its preceding <code>[Time Field
Separator]</code> are jointly optional.</p>
<p>The <code>[second]</code> field and its preceding <code>[Time Field
Separator]</code> are jointly optional if the <code>[minute]</code> field is
specified. The <code>[second]</code> field is not allowed if the
<code>[minute]</code> field is not specified.</p>
<p>Specifying whether the time is before or after noon by using a
<code>[qualifier]</code> is optional.</p>
<h5 id="S3.2hms12lex">Lexical representation</h5>
<code>[hour]([Time Field Separator][minute]([Time Field
Separator][second])?)?([Qualifier Separator][qualifier])?</code>
<h5 id="S3.2hms12examples">Examples</h5>
<p><code><say-as interpret-as="time"
format="hms12">09:21:15</say-as></code> <br />
should be interpreted as 21 minutes and 15 seconds past the hour of 9, but
whether this is morning or evening is left to the interpretation of the
user</p>
<p><code><say-as interpret-as="time"
format="hms12">1200</say-as></code> <br />
should be interpreted as either midnight or noon by the user</p>
<p><code><say-as interpret-as="time"
format="hms12">2</say-as></code> <br />
should be interpreted as 2 o'clock (morning or afternoon to be interpreted by
the user)</p>
<p><code><say-as interpret-as="time"
format="hms12">3.00</say-as></code> <br />
should be interpreted as 3 o'clock (morning or afternoon to be interpreted by
the user)</p>
<p><code><say-as interpret-as="time"
format="hms12">09:21:00PM</say-as></code> <br />
should be interpreted as 21 minutes past the hour of 9 in the evening</p>
<p><code><say-as interpret-as="time" format="hms12">07:21:00
a.m.</say-as></code> <br />
should be interpreted as 21 minutes past the hour of 7 in the morning</p>
<p><code><say-as interpret-as="time" format="hms12">12:00
am</say-as></code> <br />
should be interpreted as midnight</p>
<p><code><say-as interpret-as="time"
format="hms12">12.00pm</say-as></code> <br />
should be interpreted as noon</p>
<p><code><say-as interpret-as="time"
format="hms12">243P</say-as></code> <br />
should be interpreted as 43 minutes after 2 in the afternoon</p>
<p><code><say-as interpret-as="time"
format="hms12">2p.m.</say-as></code> <br />
should be interpreted as ten minutes past 2 o'clock in the afternoon</p>
<h3 id="S3.3h"><a id="S3.3" name="S3.3">3.3</a> <a name="phone"
id="phone">Telephone number</a></h3>
<p>Specifying "<code>telephone</code>" as the <a href="#adef_interpret-as"
class="aref">interpret-as</a> value indicates that the contained text is a
telephone number. The intention is to give a hint to the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> how to interpret the contained text in order to speak it
properly.</p>
<h3 id="S3.3Format">The <code class="att">format</code> attribute</h3>
<p>The optional <code class="att">format</code> attribute can be used to
indicate a country code. Values are strings of digits; see <a
href="#ref-cc-itu">[ITU-CC]</a> for a normative list of country codes defined
by ITU-T.<br />
This attribute will give a hint to the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> of the country code of the telephone number to be spoken. The
<a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> may use this information to interpret the telephone number in
the content. Note that the presence of the <code class="att">format</code>
attribute does not preclude the content from containing a country code, and
that the country code in the content may differ from the value of the <code
class="att">format</code> attribute. In the latter case the content has
priority over the attribute value.</p>
<h3 id="S3.3ExamplesUse">Example uses of the <code class="att">format</code>
attribute:</h3>
<p><code><say-as interpret-as="telephone" format="1">(781)
771-7777</say-as></code> <br />
this is a telephone number which is in use in North America.</p>
<p><code><say-as interpret-as="telephone"
format="1">1-866-TELLME-1</say-as></code> <br />
this is a another telephone number which is in use in North America.</p>
<p><code><say-as interpret-as="telephone"
format="1">+39.800.123456</say-as></code> <br />
this telephone number is in the country code "39" (that is Italy), even if
the country code present in the <code class="att">format</code> attribute
does not match it.</p>
<h3 id="S3.3Detail">The <code class="att">detail</code> attribute</h3>
<p>This attribute is not used for telephone content. Because no standard
values of this attribute are defined, the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> is expected to ignore any values in this attribute that it does
not support. See the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> definition [<a href="#ref-ssml">SSML §3.1.8</a>] for
details.</p>
<h3 id="S3.3Impl">Implementation remarks</h3>
<p>Commonly the string of digits is spoken in a chunked way to highlight the
structure of the number itself. However, the chunking algorithm itself is
processor specific.</p>
<h3 id="S3.3formats">The possible formats</h3>
<p>The content of a <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> with <code><a href="#adef_interpret-as"
class="aref">interpret-as</a>="telephone"</code> should contain a telephone
number as it is commonly written by a user. The only limit to the range of
characters that can occur within the content and be appropriately interpreted
is that imposed by the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> itself. Some characters that might commonly occur, in addition
to the digits 0-9, are separator characters to give a structure to the number
itself, a prefix '+', letters that stand for numbers ("1-800-EXAMPLE"), and
the characters '*' and '#'; of course, these characters are by no means the
complete set of characters that may occur.</p>
<h3 id="S3.3examples">Examples:</h3>
<h4 id="S3.3digits">Telephone numbers as digits</h4>
<p><code><say-as interpret-as="telephone"
format="39">0117577577</say-as></code> <br />
this is a telephone number which is in use in Italy (country code is
<code>"39"</code>), for a local number.</p>
<p><code><say-as interpret-as="telephone"
format="81">0532441234</say-as></code> <br />
this is a telephone number which is in use in Japan (country code is
<code>"81"</code>), for a local number.</p>
<p><code><say-as interpret-as="telephone"
format="39">3477577577</say-as></code> <br />
this is a telephone number which is in use in Italy (country code is
<code>"39"</code>), for a mobile number.</p>
<p><code><say-as interpret-as="telephone"
format="81">09012345678</say-as></code> <br />
<code><say-as interpret-as="telephone"
format="81">08012345678</say-as></code> <br />
these two are telephone numbers which are in use in Japan (country code is
<code>"81"</code>), for a mobile number.</p>
<p><code><say-as interpret-as="telephone" format="1">2123981900
</say-as></code> <br />
this is a telephone number which is in use in NY area (country code is
<code>"1"</code>), for a local number.</p>
<p><code><say-as interpret-as="telephone">3981900
</say-as></code> <br />
this is a telephone number, but it is not clear to which country it
belongs.</p>
<p><code><say-as interpret-as="telephone"
format="39">800033033</say-as></code> <br />
this is a telephone number which is in use in Italy (country code is
<code>"39"</code>), for an 800 number.</p>
<p><code><say-as interpret-as="telephone"
format="81">0120123456</say-as></code> <br />
<code><say-as interpret-as="telephone"
format="81">0800123456</say-as></code> <br />
these two are telephone numbers which are in use in Japan (country code is
<code>"81"</code>), for toll-free domestic dialing.</p>
<p><code><say-as interpret-as="telephone"
format="81">800033033</say-as></code> <br />
this is a telephone number which is in use in Japan (country code is
<code>"81"</code>), for toll-free international dialing.</p>
<p><code><say-as
interpret-as="telephone">800255244</say-as></code> <br />
this is an 800 telephone number, but it is not clear to which country it
belongs.</p>
<h4 id="S3.3separ">Telephone numbers with separators</h4>
<p>Examples from the previous section, but with some commonly used
separators:</p>
<p><code><say-as interpret-as="telephone"
format="39">011.7577577</say-as></code> <br />
this is a telephone number with common separators which is in use in Italy
(country code is <code>"39"</code>), for a local number.</p>
<p><code><say-as interpret-as="telephone"
format="81">0532-44-1234</say-as></code> <br />
<code><say-as interpret-as="telephone"
format="81">(0532)44-1234</say-as></code> <br />
these two are telephone numbers with common separators which are in use in
Japan (country code is <code>"81"</code>), for local number .</p>
<p><code><say-as interpret-as="telephone"
format="39">347/7577577</say-as></code> <br />
this is a telephone number with common separators which is in use in Italy
(country code is <code>"39"</code>), for a mobile number.</p>
<p><code><say-as interpret-as="telephone"
format="81">090-1234-5678</say-as></code> <br />
this is a telephone number with common separators which is in use in Japan
(country code is <code>"81"</code>), for a mobile number.</p>
<p><code><say-as
interpret-as="telephone">090-1234-5678</say-as></code> <br />
this is a telephone number with common separators, but it is not clear to
which country it belongs.</p>
<p><code><say-as interpret-as="telephone" format="39">800
0330334</say-as></code> <br />
this is a telephone number with common separators which is in use in Italy
(country code is <code>"39"</code>), for an 800 number.</p>
<p><code><say-as interpret-as="telephone"
format="81">0120-123456</say-as></code> <br />
<code><say-as interpret-as="telephone"
format="81">0120-12-3456</say-as></code> <br />
<code><say-as interpret-as="telephone"
format="81">0120-1234-56</say-as></code> <br />
these examples are possible telephone numbers with common separators which
are in use in Japan (country code is <code>"81"</code>), for toll-free
domestic dialing.</p>
<p><code><say-as interpret-as="telephone"
format="1">212-398-1900</say-as></code> <br />
this is a telephone number with common separators which is in use in NY area
(country code is <code>"1"</code>), for a local number.</p>
<p><code><say-as
interpret-as="telephone">800.255.244</say-as></code> <br />
this is an 800 telephone number with common separators, but it is not clear
to which country it belongs.</p>
<h4 id="S3.3global">Global telephone numbers</h4>
<p>Some more examples which include the prefix "+" and the country code in
the telephone number:</p>
<p><code><say-as interpret-as="telephone"
format="39">+39(011)777-7777</say-as></code> <br />
<code><say-as
interpret-as="telephone">+39(02)766-7676</say-as></code> <br />
this is a telephone number which is in use in Italy (country code is
<code>"39"</code>), for a local number.</p>
<p><code><say-as interpret-as="telephone"
format="81">+81(532)-44-1234</say-as></code> <br />
<code><say-as interpret-as="telephone">+81 532 44
1234</say-as></code> <br />
these two are telephone numbers which are in use in Japan for the local
number.</p>
<p><code><say-as interpret-as="telephone"
format="39">+39.347.7577577</say-as></code> <br />
this is a telephone number which is in use in Italy (country code is
<code>"39"</code>), for a mobile number.</p>
<p><code><say-as interpret-as="telephone" format="81">+81 90 7577
7577</say-as></code> <br />
<code><say-as interpret-as="telephone">+81
90-7577-7577</say-as></code> <br />
these two are telephone numbers which are in use in Japan for a mobile
number.</p>
<p><code><say-as interpret-as="telephone"
format="39">+39-800-4141414</say-as></code> <br />
this is a telephone number which is in use in Italy (country code is
<code>"39"</code>), for an 800 number.</p>
<p><code><say-as interpret-as="telephone">+1 212-398-1900
</say-as></code> <br />
this is a telephone number which is in use in NY area (country code is
<code>"1"</code>), for a local number.</p>
<h4 id="S3.3other">Other telephone number examples</h4>
<p>Some more examples of short numbers:</p>
<p><code><say-as interpret-as="telephone"
format="39">187</say-as></code> <br />
this is a telephone number which is in use in Italy (country code is
<code>"39"</code>), for TelecomItalia customer service.</p>
<p><code><say-as interpret-as="telephone"
format="39">4*</say-as></code> <br />
these are two examples of the same telephone number which is in use in Italy
(country code is <code>"39"</code>), for a short number to access many
services offered by TelecomItalia.</p>
<p><code><say-as interpret-as="telephone">6257</say-as></code>
<br />
this could be a telephone number local inside a company.</p>
<h3 id="S3.4h"><a id="S3.4" name="S3.4">3.4</a> <a id="charstring"
name="charstring">Character string</a></h3>
<p>Specifying "<code>characters</code>" as the <a href="#adef_interpret-as"
class="aref">interpret-as</a> value indicates that the enclosed text should
be spoken as a series of alpha-numeric characters. (It is thus a
generalization of the concept of digit string.) The text may include
punctuation. The pronunciation of the individual characters is not indicated.
For example, the digit '0' may be pronounced in English 'zero' or 'oh' or
'naught' at the discretion of the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a>.</p>
<h3 id="S3.4Format">The <code class="att">format</code> attribute</h3>
<p>The <code class="att">format</code> attribute can have one of the
following two values:</p>
<ul>
<li>"<code>glyphs</code>"</li>
<li>"<code>characters</code>"</li>
</ul>
<p>If the <code class="att">format</code> attribute is not specified, it
defaults to "<code>characters</code>".</p>
<h4 id="S3.4glyphs">Format: <code>glyphs</code></h4>
<p>This indicates all characters should be read with glyph information,
explicitly specifying uppercase/lowercase, accents, diacritics etc.</p>
<p>The purpose is to render the enclosed text in such a manner that it is
unambiguously clear to the listener what the written text (glyphs) look
like.</p>
<p>This is useful, for example, for arbitrary product numbers, passwords,
given names, URLs, source code statements, formulas, and other similar
character strings.</p>
Example:
<p><code><say-as interpret-as="characters" format="glyphs">Jö_4
2</say-as></code> <br />
capital J, o with umlaut, underscore, four, space, two</p>
<h4 id="S3.4characters">Format: <code>characters</code></h4>
<p>Reads all characters but doesn't provide distinction between different
glyphs that could be used for the same character. For example, this format
doesn't read uppercase/lowercase information.</p>
<p>The purpose is to render the enclosed text in such a manner that it is
unambiguously clear which characters the text contains.</p>
<p>This is for example the case for spelling ordinary words or names if exact
spelling (with accentuation) is not needed.</p>
Example:
<p><code><say-as interpret-as="characters"
format="characters">W3C</say-as></code> <br />
double-you, three, c <i>(and not capital double-you, three, capital C)</i></p>
<h3 id="S3.4Detail">The <code class="att">detail</code> attribute</h3>
<p>The value of this attribute, if present, is a series of digits specifying
how the characters are to be grouped. It is an <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-error">error</a>
if the number of characters in the string does not match the total indicated
in this parameter. The actual phonetic realization of the grouping is left up
to the recognizer.</p>
<h3 id="S3.4examples">Examples</h3>
<p>Consider the following code:</p>
<p><code><say-as interpret-as="characters" format="characters" detail="3 1
2">1a3BZ7</say-as></code></p>
<p>In this example, the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> begins with '1a3BZ7' as a string of characters, which the <code
class="att">detail</code> attribute instructs it to chunk into three groups,
namely '1a3', 'B', and 'Z7'. One way the processor could realize this would
be to pronounce the individual characters '1', 'a', and '3', followed by a
pause, then the single character 'B', followed by another pause, then the
characters 'Z' and '7'. However, the phonetic details of the realization are
left up to the processor, including the intonational contour and the duration
(and even the existence) of the pause.</p>
<h3 id="S3.5h"><a id="S3.5" name="S3.5">3.5</a> <a id="cardinal"
name="cardinal">Cardinal number</a></h3>
<p>Specifying "<code>cardinal</code>" as the <a href="#adef_interpret-as"
class="aref">interpret-as</a> value indicates that the enclosed text is an
integral or decimal number and should be spoken as a cardinal number (as
opposed to an ordinal number or digit string). An optional leading '-' or '+'
is permitted to indicate negative (positive) numbers. Note that the exact
rendering of the cardinal number is still determined by the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a>.</p>
<h3 id="S3.5Format">The <code class="att">format</code> attribute</h3>
<p>This optional attribute indicates the character used to separate the
integral and fractional parts of the number.</p>
<h3 id="S3.5Detail">The <code class="att">detail</code> attribute</h3>
<p>This optional attribute indicates the character used to group the integral
part of the number. In Western European languages this is normally the
thousands separator, but other conventions may prevail for other
languages.</p>
<p>If neither the <code class="att">format</code> nor <code
class="att">detail</code> attribute is provided, the number will be parsed
according to processor-specific defaults.</p>
<h3 id="S3.5examples">Examples</h3>
<p><code><say-as interpret-as="cardinal">1234567</say-as></code>
<br />
<code><say-as interpret-as="cardinal"
detail=",">1,234,567</say-as></code> <br />
These two examples, in North America, are likely to be spoken as "One
million, two hundred thirty-four thousand, five hundred and sixty seven."</p>
<p><code><say-as interpret-as="cardinal"
format=".">123.456</say-as></code> <br />
This example will likely be spoken as "One hundred twenty three point four
five six."</p>
<p><code><say-as interpret-as="cardinal"
detail=".">123.456</say-as></code> <br />
This example will likely be spoken as "One hundred twenty three thousand,
four hundred and fifty six."</p>
<h3 id="S3.6h"><a id="S3.6" name="S3.6">3.6</a> <a id="ordinal"
name="ordinal">Ordinal number</a></h3>
<p>Specifying "<code>ordinal</code>" as the <a href="#adef_interpret-as"
class="aref">interpret-as</a> value indicates that the enclosed text is an
integral number and should be spoken as an ordinal number (as opposed to a
cardinal number or digit string). Note that numbers with separator characters
such as 5,657 may be correctly interpreted by the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> at the processor's discretion.</p>
<p>As with all values of the <a href="#adef_interpret-as"
class="aref">interpret-as</a> attribute, this one is a hint to the processor
on how to interpret the contents. If the sentence containing the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> element provides sufficient context for appropriate
number and gender concordance, it is expected that the processor will produce
the correct ordinal. If the context is not sufficient, the processor will
produce the best representation of the ordinal that it can.</p>
<p>The <code class="att">format</code> and <code class="att">detail</code>
attributes are not used for ordinal content. Because no standard values for
these attributes are defined, the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#term-processor">synthesis
processor</a> is expected to ignore any values in these attributes that it
does not support. See the <a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/#edef_say-as"
class="eref">say-as</a> definition [<a href="#ref-ssml">SSML §3.1.8</a>] for
details.</p>
<h3 id="S3.6examples">Examples</h3>
<p><code><say-as interpret-as="ordinal">123</say-as></code> <br />
In English, this example will likely be spoken as "One hundred twenty
third."</p>
<h2 id="S4h"><a id="S4" name="S4">4.</a> References</h2>
<h3 id="S4.1h"><a id="S4.1" name="S4.1">4.1</a> Normative References</h3>
<dl>
<dt><a id="ref-cc-itu" name="ref-cc-itu">[ITU-CC]</a></dt>
<dd><cite><a
href="http://www.itu.int/itudoc/itu-t/ob-lists/icc/e164_763.html">List
of ITU-T Recommendation E.164 Assigned Country Codes</a></cite>.
International Telecommunication Union, February 2004. This document is
available at <a
href="http://www.itu.int/itudoc/itu-t/ob-lists/icc/e164_763.html">http://www.itu.int/itudoc/itu-t/ob-lists/icc/e164_763.html</a>.</dd>
<dt><a id="ref-ssml" name="ref-ssml">[SSML]</a></dt>
<dd><cite><a
href="http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/">Speech
Synthesis Markup Language (SSML) Version 1.0</a></cite>, D. Burnett, et
al., Editors. World Wide Web Consortium, 7 September 2004. This version
of the SSML Recommendation is
http://www.w3.org/TR/2004/REC-speech-synthesis-20040907/. The <a
href="http://www.w3.org/TR/speech-synthesis/">latest version of
SSML</a> is available at <a
href="http://www.w3.org/TR/speech-synthesis/">http://www.w3.org/TR/speech-synthesis/</a>.</dd>
<dt><a id="ref-schema2" name="ref-schema2">[SCHEMA2]</a></dt>
<dd><cite><a
href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML Schema
Part 2: Datatypes</a></cite>, P.V. Biron and A. Malhotra, Editors.
World Wide Web Consortium, 2 May 2001. This version of the XML Schema
Part 2 Recommendation is
http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/. The <a
href="http://www.w3.org/TR/xmlschema-2/">latest version of XML Schema
2</a> is available at <a
href="http://www.w3.org/TR/xmlschema-2/">http://www.w3.org/TR/xmlschema-2/</a>.</dd>
</dl>
<h3 id="S4.2h"><a id="S4.2" name="S4.2">4.2</a> Informative References</h3>
<dl>
<dt><a id="ref-ISO8601" name="ref-ISO8601"></a>[ISO 8601:2000]</dt>
<dd><cite><a
href="http://www.iso.ch/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=26780">Representation
of dates and times</a></cite>. ISO (International Organization for
Standardization), 8 June 2004. This document is available at <a
href="http://www.iso.ch/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=26780">http://www.iso.ch/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=26780</a>.</dd>
<dt><a id="ref-vxml" name="ref-vxml">[VXML]</a></dt>
<dd><cite><a
href="http://www.w3.org/TR/2004/REC-voicexml20-20040316/">Voice
Extensible Markup Language (VoiceXML) Version 2.0</a></cite>, S.
McGlashan, et al., Editors. World Wide Web Consortium, 16 March 2004.
This version of the VoiceXML 2.0 Recommendation is
http://www.w3.org/TR/2004/REC-voicexml20-20040316/. The <a
href="http://www.w3.org/TR/voicexml20/">latest version of VoiceXML
2</a> is available at <a
href="http://www.w3.org/TR/voicexml20/">http://www.w3.org/TR/voicexml20/</a>.</dd>
</dl>
<h2 id="S5h"><a id="S5" name="S5">5.</a> Acknowledgments</h2>
<p>This document was written with the participation of the following
participants in the W3C Voice Browser Working Group <em>(listed in
alphabetical order)</em>:</p>
<dl>
<dd>Dave Burke, VoxPilot<br />
Ken Davies, HeyAnita<br />
Max Froumentin, W3C<br />
Jim Larson, Intel<br />
Dave Raggett, W3C/Canon<br />
Ellen Stuer, ScanSoft<br />
</dd>
</dl>
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