- From: Daniel Weck via cvs-syncmail <cvsmail@w3.org>
- Date: Wed, 11 May 2011 17:13:35 +0000
- To: public-css-commits@w3.org
Update of /sources/public/csswg/css3-speech
In directory hutz:/tmp/cvs-serv6352
Modified Files:
Overview.html Overview.src.html
Log Message:
added missing "normal" value for voice-rate
Index: Overview.html
===================================================================
RCS file: /sources/public/csswg/css3-speech/Overview.html,v
retrieving revision 1.50
retrieving revision 1.51
diff -u -d -r1.50 -r1.51
--- Overview.html 11 May 2011 10:20:03 -0000 1.50
+++ Overview.html 11 May 2011 17:13:33 -0000 1.51
@@ -153,7 +153,7 @@
enable authors to declaratively control the rendering of documents via
speech synthesis, and using optional audio cues. The feature set exposed
by this specification is designed to match the model described by the
- Speech Synthesis Markup Language (SSML) Version 1.0 <a
+ Speech Synthesis Markup Language (SSML) Version 1.1 <a
href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>. Note
that this standard was developed in cooperation with the <a
@@ -199,27 +199,13 @@
<hr>
<div class=issue>
- <!-- p>The following features are judged "at risk" and may be dropped at the
- end of the CR period,
- especially if there has not been enough interest from implementers:
- <ul>
-
- </ul>
- </p -->
- <!-- li><a href="#issue-mark">mark</a></li -->
<p>The following issues need to be discussed and require working group
resolutions:</p>
<ul>
<li> <a href="#issue-lists">handling of list styles, numbered items</a>
</ul>
- <!-- li>
- <a href="#issue-phonemes">'phonemes' property breaks principle of content/presentation
- separation</a>
- </li -->
- <!-- li><a href="#issue-speakability-name">'speakability' not an ideal property name ?</a></li -->
- <!-- li><a href="#issue-voice-cues-volume">audio cues volume level relative to voice-volume</a></li -->
- <!-- li><a href="#issue-speak_none">speak:none</a></li -->
+
<p>The CSS WG maintains a separate <a
href="http://www.w3.org/Style/CSS/Tracker/products/29">list of issues</a>
for this module.</p>
@@ -336,11 +322,7 @@
styles</a>
<li><a href="#pronunciation"><span class=secno>11. </span> Pronunciation,
- phonemes <!--
- Phonetics: 'phonemes' and <a href="#phonetic-alphabet"
- >'@phonetic-alphabet'</a>
- -->
- </a>
+ phonemes </a>
<li><a href="#content"><span class=secno>12. </span>Inserted and replaced
content</a>
@@ -374,25 +356,6 @@
<!--end-toc-->
<hr>
- <!-- h2 id="dependencies">Dependencies on other specifications</h2>
-
- <p>This CSS module depends on the following CSS specifications:</p>
-
- <ul>
- <li>Values and Units [[!CSS3VAL]]</li>
- <li>CSS 2.1 Visual Formatting model [[!CSS21]]</li>
- </ul>
-
- <p>This CSS module also has non-normative references to the following CSS specifications:</p>
-
- <ul>
- <li>Generated and Replaced Content [[CSS3GENCON]]</li -->
- <!-- /ul -->
- <!-- li>Basic box model [[CSS3BOX]]</li -->
- <!-- li>Cascade and Inheritance [[CSS3CASCADE]]</li -->
- <!-- li>Syntax [[CSS3SYN]]</li -->
- <!-- li>Tables [[CSS3TBL]]</li -->
- <!-- li>Selectors [[SELECT]]</li -->
<h2 id=introduction><span class=secno>1. </span>Introduction</h2>
@@ -492,9 +455,6 @@
</p>
</pre>
</div>
- <!-- p class="note">
- Note that the "aural" media type is deprecated, as defined in the informative CSS2.1 Aural appendix [[!CSS21]]).
- </p -->
<h2 id=aural-model><span class=secno>2. </span>The <dfn
id=aural-box-model>aural "box" model</dfn></h2>
@@ -512,8 +472,7 @@
class=property>border</code>’ and ‘<code
class=property>margin</code>’, respectively. The following diagram
illustrates the equivalence between properties of the visual and aural box
- models, applied to the selected <element>:</p>
- <!-- [[CSS3BOX]] -->
+ models, applied to the selected <element>:
<p> <img alt="A graph depicting the aural 'box' model." id=aural-box
src=aural-box.png>
@@ -578,7 +537,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>volume</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>volume</code>
attribute of the <code>prosody</code> element</a> from the SSML markup
language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -813,13 +772,9 @@
property. The distribution of audio signals between left and right
channels would consequently occur at post-synthesis stage, for example
when a speech-enabled user-agent mixes the various audio sources that may
- be authored within the document.</p>
- <!-- p>Unlike 'voice-volume', 'voice-balance'
- <em>does</em> apply to <a href="#cue-props">audio cues</a>.</p -->
+ be authored within the document.
<h2 id=speaking-props><span class=secno>4. </span>Speaking properties</h2>
- <!-- <p>An additional speech property, speak-header, is described in the
- CSS module covering tables.</p> -->
<h3 id=speaking-props-speak><span class=secno>4.1. </span>The ‘<a
href="#speak"><code class=property>speak</code></a>’ property</h3>
@@ -980,7 +935,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_say-as"><code>say-as</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_say-as"><code>say-as</code>
element</a> from the SSML markup language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>. Also
note that possible values are described in a <a
@@ -1144,7 +1099,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_break"><code>break</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_break"><code>break</code>
element</a> from the SSML markup language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -1427,7 +1382,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_break"><code>break</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_break"><code>break</code>
element</a> from the SSML markup language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -1542,9 +1497,7 @@
<td> <dfn id=cue-before>cue-before</dfn>
<tr>
- <td> <em>Value:</em></td>
- <!-- td><uri> [<non-negative number> | <percentage> | silent
- | x-soft | soft | medium | loud | x-loud] | none | inherit</td -->
+ <td> <em>Value:</em>
<td><uri> [<percentage> | silent]? | none | inherit
@@ -1590,9 +1543,7 @@
<td> <dfn id=cue-after>cue-after</dfn>
<tr>
- <td> <em>Value:</em></td>
- <!-- td><uri> [<non-negative number> | <percentage> | silent
- | x-soft | soft | medium | loud | x-loud] | none | inherit</td -->
+ <td> <em>Value:</em>
<td><uri> [<percentage> | silent]? | none | inherit
@@ -1640,7 +1591,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_audio"><code>audio</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_audio"><code>audio</code>
element</a> from the SSML markup language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -1787,180 +1738,6 @@
}
</pre>
</div>
- <!-- Add something here about gc -->
- <!-- h2 id="mark-props">Mark properties</h2>
-
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="mark-before">mark-before</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><string></td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td>none</td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
-
- <p> </p>
-
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="mark-after">mark-after</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><string></td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td>none</td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
-
- <p>The mark properties allow named markers to be attached to the
- audio stream. For compatibility with SSML, this must conform to the
- <a href=
- "http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/#token">xsd:token</a>
- datatype as defined in XML Schema. Synthesis processors must do one
- or both of the following when encountering a mark:</p>
-
- <ul>
- <li>Inform the hosting environment with the value of the mark's
- name with information allowing the platform to retrieve the
- corresponding position in the rendered output.</li>
- <li>When audio output of the SSML document reaches the mark,
- issue an event that includes the required name attribute of
- the element. The hosting environment defines the destination
- of the event.</li>
- </ul>
-
- <p>The mark properties have no audible effect on the speech
- and instead just serve to mark points in the stream.</p>
-
- <p>Values have the following meanings:</p>
-
- <dl>
- <dt><strong><string></strong></dt>
-
- <dd>A string to be used as the name of the mark.</dd>
- </dl>
-
- <p>A good way of adding the marking properties could be by
- means of using the attr() function.</p>
-
- <div class="example">
- <p>Examples:</p>
- <pre>
- h1 {mark-before: "section"}
-
- p {mark-before: attr(id) }
- </pre>
- </div>
-
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="mark">mark</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><'mark-before'> || <'mark-after'></td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td>N/A (see individual properties)</td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>N/A (see individual properties)</td>
- </tr>
- </tbody>
- </table>
-
- <p>The 'mark' property is a shorthand for setting 'mark-before'
- and 'mark-after'. If two values are given the first value is
- 'mark-before' and the second is 'mark-after'. If only one value
- is given, it applies to both properties.</p>
-
- <div class="example">
- <p>The following two rules are equivalent:</p>
-
- <pre>
- div {mark-before: "start"; mark-after: "end" }<br />
- div {mark: "start" "end" }
- </pre></div>
-
- <p class="issue" id="issue-mark">ISSUE: in SSML, the 'mark' element acts as a destination anchor
- and as a mean to raise an event when the point is reached within the speech stream.
- This functionality arguably isn't purely of stylistic nature (if at all), so it is judged "at risk" of being removed from this specification draft.
- There is a <a href="http://lists.w3.org/Archives/Public/www-style/2010Dec/0239.html">related discussion</a> on the public mailing-list.
- </p -->
<h2 id=voice-char-props><span class=secno>8. </span>Voice characteristic
properties</h2>
@@ -2022,7 +1799,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_voice"><code>voice</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_voice"><code>voice</code>
element</a> from the SSML markup language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -2155,13 +1932,13 @@
<tr>
<td> <em>Value:</em>
- <td><percentage> | x-slow | slow | medium | fast | x-fast |
- inherit
+ <td>normal | <percentage> | x-slow | slow | medium | fast | x-fast
+ | inherit
<tr>
<td> <em>Initial:</em>
- <td>medium
+ <td>normal
<tr>
<td> <em>Applies to:</em>
@@ -2190,7 +1967,7 @@
</table>
<p>The ‘<a href="#voice-rate"><code
- class=property>voice-rate</code></a>’ property manipulates the speed
+ class=property>voice-rate</code></a>’ property manipulates the rate
of generated synthetic speech in terms of words per minute. The default
rate for a given ‘<a href="#voice-family"><code
class=property>voice-family</code></a>’ is processor-specific, and
@@ -2198,18 +1975,24 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>rate</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>rate</code>
attribute of the <code>prosody</code> element</a> from the SSML markup
language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
<dl>
+ <dt> <strong>normal</strong>
+
+ <dd>
+ <p>Represents the default rate produced by the speech synthesizer for the
+ currently active voice.</p>
+
<dt> <strong><percentage></strong>
<dd>
<p>Only positive <a href="#percentage-def">percentage</a> values are
allowed. Computed values are calculated relative to the default speaking
- rate for the voice.</p>
+ rate for the voice (the "normal" computed value).</p>
<p class=note> Note that a leading "+" sign does not denote an increment,
for example +50% is equivalent to 50% (i.e. the computed value equals
@@ -2285,7 +2068,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>pitch</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>pitch</code>
attribute of the <code>prosody</code> element</a> from the SSML markup
language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -2299,11 +2082,6 @@
per the syntax of <a href="#frequency-def">frequency</a> values defined
in <a href="#CSS3VAL" rel=biblioentry>[CSS3VAL]<!--{{!CSS3VAL}}--></a>.
Only positive values are allowed.</p>
- </dd>
- <!-- dd>
- This is an absolute value that specifies the average pitch of the speaking voice in Hertz.
- It must be <non-negative number> followed by the "Hz" suffix.
- </dd -->
<dt> <strong><percentage></strong>
@@ -2413,7 +2191,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>range</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>range</code>
attribute of the <code>prosody</code> element</a> from the SSML markup
language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -2522,7 +2300,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_emphasis"><code>emphasis</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_emphasis"><code>emphasis</code>
element</a> from the SSML markup language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -2544,7 +2322,7 @@
<p>These values are monotonically non-decreasing in strength. Their
application results in more emphasis than what the speech synthesizer
would normally produce (i.e. more than the value corresponding to
- ‘<code class=property>auto</code>’).</p>
+ ‘<code class=property>normal</code>’).</p>
<dt> <strong>reduced</strong>
@@ -2554,7 +2332,7 @@
<div class=example>
<pre>
-span.default-emphasis { voice-stress: auto; }
+span.default-emphasis { voice-stress: normal; }
span.lowered-emphasis { voice-stress: reduced; }
span.removed-emphasis { voice-stress: none; }
span.normal-emphasis { voice-stress: moderate; }
@@ -2636,7 +2414,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>duration</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>duration</code>
attribute of the <code>prosody</code> element</a> from the SSML markup
language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -2673,12 +2451,7 @@
href="http://lists.w3.org/Archives/Public/www-style/2011Feb/0195.html">related
discussion</a> on the public mailing-list.
- <h2 id=pronunciation><span class=secno>11. </span> Pronunciation, phonemes
- <!--
- Phonetics: 'phonemes' and <a href="#phonetic-alphabet"
- >'@phonetic-alphabet'</a>
- -->
- </h2>
+ <h2 id=pronunciation><span class=secno>11. </span> Pronunciation, phonemes</h2>
<p class=note>Note that this entire section is non-normative.
@@ -2705,7 +2478,7 @@
such mechanism isn't formally defined in the W3C HTML standard(s).
However, the <a href="http://idpf.org/epub/30">EPUB 3.0 draft
specification</a> allows (x)HTML5 documents to contain SSML-derived
- attributes (<a href="http://www.w3.org/TR/speech-synthesis">Speech
+ attributes (<a href="http://www.w3.org/TR/speech-synthesis11">Speech
Synthesis Markup Language</a>) that describe how to pronounce text based
on a particular phonetic alphabet.</p>
<!-- p>
@@ -2724,135 +2497,10 @@
concerns with the work done by the HTML-Audio and HTML-Speech
Incubator Groups.
</p -->
- <!--
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td>
- <dfn id="phonemes">phonemes</dfn>
- </td>
- </tr>
- <tr>
- <td>
- <em>Value:</em>
- </td>
- <td><string></td>
- </tr>
- <tr>
- <td>
- <em>Initial:</em>
- </td>
- <td>
- <em>implementation-dependent</em>
- </td>
- </tr>
- <tr>
- <td>
- <em>Applies to:</em>
- </td>
- <td>all elements</td>
- </tr>
- <tr>
- <td>
- <em>Inherited:</em>
- </td>
- <td>no</td>
- </tr>
- <tr>
- <td>
- <em>Percentages:</em>
- </td>
- <td>N/A</td>
- </tr>
- <tr>
- <td>
- <em>Media:</em>
- </td>
- <td>speech</td>
- </tr>
- <tr>
- <td>
- <em>Computed value:</em>
- </td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
- <p>This allows authors to specify a phonetic pronunciation for the text contained by the
- corresponding element.</p>
- <p>Values have the following meanings:</p>
- <dl>
- <dt>
- <strong><string></strong>
- </dt>
- <dd> A character string that describes a pronunciation based on the specified <a
- href="#phonetic-alphabet">'@phonetic-alphabet'</a>. </dd>
- </dl>
- <p class="issue" id="issue-phonemes">ISSUE: the 'phonemes' property covers functionality that
- arguably doesn't belong to CSS, as it breaks the principle of separation between content and
- presentation (i.e. any change in the source text must be echoed by an corresponding change in
- the content of the aural 'phonemes' property). The broader aspect of pronunciation lexicons
- would be better addressed in the content markup. For example, <a
- href="http://wiki.whatwg.org/wiki/RelExtensions">it is proposed</a> that formats like the
- W3C's own PLS standard should be supported by the link/rel mechanism. There is a <a
- href="http://lists.w3.org/Archives/Public/www-style/2011Jan/0248.html">related
- discussion</a> on the public mailing-list. </p>
- <h3 id="phonetic-alphabet">@phonetic-alphabet</h3>
- <p> A phonetic alphabet is a collection of symbols that represent the sounds of one or more
- human languages. The default alphabet for the pronunciation string of the 'phonemes' property
- is the International Phonetic Alphabet ("ipa"), corresponding to Unicode representations of
- the phonetic characters developed by the International Phonetic Association [<a href="#IPA"
- >IPA</a>]. The phonetic alphabet can be explicitly specified using the <a
- href="#phonetic-alphabet">'@phonetic-alphabet'</a> rule.</p>
- <p class="note"> Note that the alphabet is specified via an at-rule to avoid problems with
- inappropriate cascades that can occur if the alphabet was set via a
- property.</p>
- -->
- <!-- [[CSS3CASCADE]] -->
- <!--
- <div class="example">
- <p>Example:</p>
- <pre>
- @phonetic-alphabet "ipa";
- #tomato { phonemes: "t\0252 m\0251 to\028a " }
- </pre>
- <p>This will direct the speech synthesizer to replace the default pronunciation by the
- corresponding sequence of 'phonemes' in the designated alphabet.</p>
- </div>
-
- <p>At most one <a href="#phonetic-alphabet">'@phonetic-alphabet'</a> rule can appear in style
- sheet and it must appear, when used, before any occurrence of the 'phonemes' property. The
- only valid values are the default "ipa" phonetic alphabet, and vendor-specific strings such as
- "x-organization" or "x-organization-alphabet". </p>
- -->
- <!-- p class="issue">ISSUE: we do not mention any other possible value
- for <a href="#phonetic-alphabet">'@phonetic-alphabet'</a>.
- SSML 1.0 defines "ipa" to be the only valid
- value - any other value should be added with the "x-" prefix. Do we
- want to follow this? Or do we allow some other values? SAMPA comes
- to my mind as a widely used ASCII alternative to IPA, but then: SAMPA
- is language-dependent, and it might be better to have X-SAMPA.</p -->
<h2 id=content><span class=secno>12. </span>Inserted and replaced content</h2>
- <p class=note>Note that this entire section is non-normative.</p>
- <!-- div class="issue">
- <p>ISSUE: should there be a CSS equivalent to the SSML <sub>
- element? This gives the author the means to replace one string with
- another as means to changing how something is spoken, e.g. "as-key"
- for "ASCII". A possible solution is a new CSS property 'say-instead'
- for instance:</p>
-
- <pre>
- say-instead: "as-key";
- </pre>
-
- <p>The drawback with this property is that it has to be applied to a
- specific instance of an element and can't be used more generally.
- In the longer term, the use of pronunciation lexicons would provide a
- better solution.</p>
- </div -->
+ <p class=note>Note that this entire section is non-normative.
<p>Sometimes, authors will want to specify a mapping from the source text
into another string prior to the application of the regular pronunciation
@@ -2863,7 +2511,7 @@
<p class=note> Note that the functionality provided by this property is
related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_sub"><code>alias</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_sub"><code>alias</code>
attribute of the <code>sub</code> element</a> from the SSML markup
language <a href="#SPEECH-SYNTHESIS"
rel=biblioentry>[SPEECH-SYNTHESIS]<!--{{!SPEECH-SYNTHESIS}}--></a>.
@@ -2925,106 +2573,9 @@
<p>Detailed information can be found in the CSS3 Generated and Replaced
Content Module <a href="#CSS3GENCON"
- rel=biblioentry>[CSS3GENCON]<!--{{CSS3GENCON}}--></a>.</p>
- <!--
- <h2 id="interpret-as-props">Interpretation property:
- <a href="#interpret-as">'interpret-as'</a></h2>
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="interpret-as">interpret-as</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><date> | <time> | currency | measure | telephone |
- address | name | net</td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td><em>implementation-dependent</em></td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
-
- <p>This provides a hint to the speech platform as to how to
- interpret the corresponding element's content and is useful when
- the content is ambigous and liable to be misinterpreted. Values
- have the following meanings:</p>
-
- <dl>
- <dt><strong><date></strong></dt>
-
- <dd>
-
- <p>Specifies a date using the same syntax as SSML. For instance,
- "date(dmy)" when applied to "12/11/2002" would be interpreted as
- 12th November 2002.</p>
- </dd>
-
- <dt><strong><time></strong></dt>
-
- <dd>
-
- <p>Specifies a time using the same syntax as SSML. For instance,
- "time(hm)" when applied to "06:30" would be interpreted as 6 hours
- and 30 minutes.</p>
- </dd>
-
- <dt><strong>currency</strong></dt>
- <dd>A hint that the element's content is a currency value.</dd>
-
- <dt><strong>measure</strong></dt>
- <dd>A hint that the element's content is a measurement.</dd>
-
- <dt><strong>telephone</strong></dt>
- <dd>A hint that the element's content is a telephone number.</dd>
-
- <dt><strong>address</strong></dt>
- <dd>A hint that the element's content is an address.</dd>
-
- <dt><strong>name</strong></dt>
- <dd>A hint that the element's content is a proper name of a person,
- company etc.</dd>
-
- <dt><strong>net</strong></dt>
- <dd>A hint that the element's content is a URI such as an email
- address or an http URI.</dd>
- </dl>
-
- <p class="issue">The above definitions were taken from the SSML
- specification dated 23 August 2002, but there is continuing
- uncertainty as to how the SSML "say-as" mechanism will end up. If
- SSML doesn't provide the same set of input types, then it may be
- necessary to transform the content before it can be directly mapped
- into SSML. We may just choose to drop 'interpret-as' until a future
- revision of this specification when the details of the say-as
- element have been clarified.</p>
- -->
+ rel=biblioentry>[CSS3GENCON]<!--{{CSS3GENCON}}--></a>.
<hr title="Separator from footer">
- <!-- h2 class="no-num" id="profiles">Appendix A — Profiles</h2>
- <p>TBD</p -->
<h2 class=no-num id=property-index>Appendix A — Property index</h2>
<!--begin-properties-->
@@ -3302,10 +2853,10 @@
<tr valign=baseline>
<td><a class=property href="#voice-rate">voice-rate</a>
- <td><percentage> | x-slow | slow | medium | fast | x-fast |
- inherit
+ <td>normal | <percentage> | x-slow | slow | medium | fast | x-fast
+ | inherit
- <td>medium
+ <td>normal
<td>all elements
@@ -3355,26 +2906,22 @@
<li> <dfn id=display-def> <a
href="http://www.w3.org/TR/CSS21/visuren.html#display-prop"> display
</a></dfn> <a href="#CSS21"
- rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a></li>
- <!-- li><dfn id="display-def">display</dfn> [[CSS3BOX]]</li -->
+ rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a>
<li> <dfn id=padding-def> <a
href="http://www.w3.org/TR/CSS21/box.html#padding-properties"> padding
</a></dfn> <a href="#CSS21"
- rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a></li>
- <!-- li><dfn id="padding-def">padding</dfn> [[CSS3BOX]]</li -->
+ rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a>
<li> <dfn id=border-def> <a
href="http://www.w3.org/TR/CSS21/box.html#border-properties"> border
</a></dfn> <a href="#CSS21"
- rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a></li>
- <!-- li><dfn id="border-def">border</dfn> [[CSS3BOX]]</li -->
+ rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a>
<li> <dfn id=margin-def> <a
href="http://www.w3.org/TR/CSS21/box.html#margin-properties"> margin
</a></dfn> <a href="#CSS21"
- rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a></li>
- <!-- li><dfn id="margin-def">margin</dfn> [[CSS3BOX]]</li -->
+ rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a>
<li> <dfn id=font-family-def> <a
href="http://www.w3.org/TR/CSS21/fonts.html#font-family-prop">
@@ -3382,8 +2929,7 @@
rel=biblioentry>[CSS21]<!--{{!CSS21}}--></a>
<li><dfn id=content-def>content</dfn> <a href="#CSS3GENCON"
- rel=biblioentry>[CSS3GENCON]<!--{{CSS3GENCON}}--></a></li>
- <!-- li><dfn id="visibility-def">visibility</dfn> [[!CSS3BOX]]</li -->
+ rel=biblioentry>[CSS3GENCON]<!--{{CSS3GENCON}}--></a>
</ul>
<p>The following definitions are provided by other modules or
@@ -3732,11 +3278,7 @@
<p>Features may/will also be dropped if adequate/sufficient (by judgment of
CSS WG) tests have not been produced for those feature(s) by the end of
- the CR period.</p>
- <!-- h2 class="no-num" id="acks">Appendix D — Acknowledgements</h2>
- <p>The editors would like to thank the members of the W3C Voice Browser and Cascading Style
- Sheets working groups for their assistance in preparing this new draft. Special thanks to
- Ellen Eide (IBM) for her detailed comments.</p -->
+ the CR period.
<h2 class=no-num id=changes>Appendix D — Changes from previous draft</h2>
@@ -3784,6 +3326,9 @@
class=property>voice-duration</code></a>’, which is the [initial]
property value as well.
+ <li>Added the ‘<code class=property>normal</code>’ value for
+ voice-rate ("default" in SSML 1.1).
+
<li>Renamed voice-family fields to be consistent with SSML.
<li>Improved the ‘<a href="#voice-family"><code
@@ -3800,7 +3345,8 @@
<li>Improved the pause collapsing prose, removed redundant paragraphs.
- <li>Added the "normal" value for ‘<a href="#voice-stress"><code
+ <li>Added the missing ‘<code class=property>normal</code>’
+ value for ‘<a href="#voice-stress"><code
class=property>voice-stress</code></a>’.
<li>Improved document structure by adding sub-sections.
@@ -3891,12 +3437,6 @@
<!---->
</dl>
<!--end-normative-->
- <!-- dl class="bibliography">
- <dt id="IPA">[IPA]</dt>
- <dd>
- <a href="http://www.langsci.ucl.ac.uk/ipa/">International Phonetic Association</a>
- </dd>
- </dl -->
<h3 class=no-num id=other-references>Other references</h3>
<!--begin-informative-->
Index: Overview.src.html
===================================================================
RCS file: /sources/public/csswg/css3-speech/Overview.src.html,v
retrieving revision 1.51
retrieving revision 1.52
diff -u -d -r1.51 -r1.52
--- Overview.src.html 11 May 2011 10:20:03 -0000 1.51
+++ Overview.src.html 11 May 2011 17:13:33 -0000 1.52
@@ -113,34 +113,19 @@
defines aural CSS properties that enable authors to declaratively control the rendering of
documents via speech synthesis, and using optional audio cues. The feature set exposed by this
specification is designed to match the model described by the Speech Synthesis Markup Language
- (SSML) Version 1.0 [[!SPEECH-SYNTHESIS]]. Note that this standard was developed in cooperation
+ (SSML) Version 1.1 [[!SPEECH-SYNTHESIS]]. Note that this standard was developed in cooperation
with the <a href="http://www.w3.org/Voice/">Voice Browser Activity</a>.</p>
<h2 class="no-num no-toc" id="status">Status of this document</h2>
<!--status-->
<p> </p>
<hr />
<div class="issue">
- <!-- p>The following features are judged "at risk" and may be dropped at the
- end of the CR period,
- especially if there has not been enough interest from implementers:
- <ul>
-
- </ul>
- </p -->
- <!-- li><a href="#issue-mark">mark</a></li -->
<p>The following issues need to be discussed and require working group resolutions:</p>
<ul>
<li>
<a href="#issue-lists">handling of list styles, numbered items</a>
</li>
</ul>
- <!-- li>
- <a href="#issue-phonemes">'phonemes' property breaks principle of content/presentation
- separation</a>
- </li -->
- <!-- li><a href="#issue-speakability-name">'speakability' not an ideal property name ?</a></li -->
- <!-- li><a href="#issue-voice-cues-volume">audio cues volume level relative to voice-volume</a></li -->
- <!-- li><a href="#issue-speak_none">speak:none</a></li -->
<p>The CSS WG maintains a separate <a href="http://www.w3.org/Style/CSS/Tracker/products/29"
>list of issues</a> for this module.</p>
</div>
@@ -151,25 +136,6 @@
<h2 class="no-num no-toc" id="contents">Table of contents</h2>
<!--toc-->
<hr />
- <!-- h2 id="dependencies">Dependencies on other specifications</h2>
-
- <p>This CSS module depends on the following CSS specifications:</p>
-
- <ul>
- <li>Values and Units [[!CSS3VAL]]</li>
- <li>CSS 2.1 Visual Formatting model [[!CSS21]]</li>
- </ul>
-
- <p>This CSS module also has non-normative references to the following CSS specifications:</p>
-
- <ul>
- <li>Generated and Replaced Content [[CSS3GENCON]]</li -->
- <!-- /ul -->
- <!-- li>Basic box model [[CSS3BOX]]</li -->
- <!-- li>Cascade and Inheritance [[CSS3CASCADE]]</li -->
- <!-- li>Syntax [[CSS3SYN]]</li -->
- <!-- li>Tables [[CSS3TBL]]</li -->
- <!-- li>Selectors [[SELECT]]</li -->
<h2 id="introduction">Introduction</h2>
<p class="note">Note that this entire section is non-normative.</p>
<h3 id="design-goals">Design goals, motivations</h3>
@@ -248,9 +214,6 @@
</p>
</pre>
</div>
- <!-- p class="note">
- Note that the "aural" media type is deprecated, as defined in the informative CSS2.1 Aural appendix [[!CSS21]]).
- </p -->
<h2 id="aural-model">The <dfn id="aural-box-model">aural "box" model</dfn></h2>
<p>The CSS formatting model for aural media is based on a sequence of sounds and silences that
occur within a nested context similar to the <a href="#box-model-def">visual box model</a>,
@@ -259,7 +222,6 @@
outermost position). These can be seen as aural equivalents to 'padding', 'border' and
'margin', respectively. The following diagram illustrates the equivalence between properties
of the visual and aural box models, applied to the selected <element>:</p>
- <!-- [[CSS3BOX]] -->
<p>
<img alt="A graph depicting the aural 'box' model." id="aural-box" src="aural-box.png" />
</p>
@@ -322,8 +284,8 @@
speech synthesiser, and is also used to calculate the relative volume level of <a
href="#cue-props">audio cues</a> within the <a href="#aural-model">audio "box" model</a>. </p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>volume</code> attribute of
- the <code>prosody</code> element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>volume</code> attribute
+ of the <code>prosody</code> element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
<strong>silent</strong>
@@ -506,11 +468,7 @@
between left and right channels would consequently occur at post-synthesis stage, for example
when a speech-enabled user-agent mixes the various audio sources that may be authored within
the document. </p>
- <!-- p>Unlike 'voice-volume', 'voice-balance'
- <em>does</em> apply to <a href="#cue-props">audio cues</a>.</p -->
<h2 id="speaking-props">Speaking properties</h2>
- <!-- <p>An additional speech property, speak-header, is described in the
- CSS module covering tables.</p> -->
<h3 id="speaking-props-speak">The 'speak' property</h3>
<table class="propdef" summary="name: syntax">
<tbody>
@@ -660,7 +618,7 @@
<p>The 'speak-as' property determines in what manner text gets rendered aurally, based upon a
basic predefined list of possible values.</p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_say-as"><code>say-as</code> element</a>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_say-as"><code>say-as</code> element</a>
from the SSML markup language [[!SPEECH-SYNTHESIS]]. Also note that possible values are
described in a <a href="http://www.w3.org/TR/ssml-sayas">W3C note</a> separate from the SSML
specification, whereas the CSS Speech Module explicitly defines a list of possible values. </p>
@@ -820,8 +778,8 @@
selected element, or if any 'cue-before' (or 'cue-after') is specified, before (or after) the
cue within the <a href="#aural-model">audio "box" model</a>.</p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_break"><code>break</code> element</a> from
- the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_break"><code>break</code> element</a>
+ from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
<strong><time></strong>
@@ -1056,8 +1014,8 @@
specific duration) that occurs before (or after) the speech synthesis rendition of an element
within the <a href="#aural-model">audio "box" model</a>. </p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_break"><code>break</code> element</a> from
- the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_break"><code>break</code> element</a>
+ from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
<strong><time></strong>
@@ -1157,8 +1115,6 @@
<td>
<em>Value:</em>
</td>
- <!-- td><uri> [<non-negative number> | <percentage> | silent
- | x-soft | soft | medium | loud | x-loud] | none | inherit</td -->
<td><uri> [<percentage> | silent]? | none | inherit</td>
</tr>
<tr>
@@ -1212,8 +1168,6 @@
<td>
<em>Value:</em>
</td>
- <!-- td><uri> [<non-negative number> | <percentage> | silent
- | x-soft | soft | medium | loud | x-loud] | none | inherit</td -->
<td><uri> [<percentage> | silent]? | none | inherit</td>
</tr>
<tr>
@@ -1260,8 +1214,8 @@
it is recommended to produce an alternative cue (e.g., popping up a warning, emitting a
warning sound, etc.)</p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_audio"><code>audio</code> element</a> from
- the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_audio"><code>audio</code> element</a>
+ from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
<strong><uri></strong>
@@ -1392,180 +1346,6 @@
}
</pre>
</div>
- <!-- Add something here about gc -->
- <!-- h2 id="mark-props">Mark properties</h2>
-
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="mark-before">mark-before</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><string></td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td>none</td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
-
- <p> </p>
-
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="mark-after">mark-after</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><string></td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td>none</td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
-
- <p>The mark properties allow named markers to be attached to the
- audio stream. For compatibility with SSML, this must conform to the
- <a href=
- "http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/#token">xsd:token</a>
- datatype as defined in XML Schema. Synthesis processors must do one
- or both of the following when encountering a mark:</p>
-
- <ul>
- <li>Inform the hosting environment with the value of the mark's
- name with information allowing the platform to retrieve the
- corresponding position in the rendered output.</li>
- <li>When audio output of the SSML document reaches the mark,
- issue an event that includes the required name attribute of
- the element. The hosting environment defines the destination
- of the event.</li>
- </ul>
-
- <p>The mark properties have no audible effect on the speech
- and instead just serve to mark points in the stream.</p>
-
- <p>Values have the following meanings:</p>
-
- <dl>
- <dt><strong><string></strong></dt>
-
- <dd>A string to be used as the name of the mark.</dd>
- </dl>
-
- <p>A good way of adding the marking properties could be by
- means of using the attr() function.</p>
-
- <div class="example">
- <p>Examples:</p>
- <pre>
- h1 {mark-before: "section"}
-
- p {mark-before: attr(id) }
- </pre>
- </div>
-
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="mark">mark</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><'mark-before'> || <'mark-after'></td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td>N/A (see individual properties)</td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>N/A (see individual properties)</td>
- </tr>
- </tbody>
- </table>
-
- <p>The 'mark' property is a shorthand for setting 'mark-before'
- and 'mark-after'. If two values are given the first value is
- 'mark-before' and the second is 'mark-after'. If only one value
- is given, it applies to both properties.</p>
-
- <div class="example">
- <p>The following two rules are equivalent:</p>
-
- <pre>
- div {mark-before: "start"; mark-after: "end" }<br />
- div {mark: "start" "end" }
- </pre></div>
-
- <p class="issue" id="issue-mark">ISSUE: in SSML, the 'mark' element acts as a destination anchor
- and as a mean to raise an event when the point is reached within the speech stream.
- This functionality arguably isn't purely of stylistic nature (if at all), so it is judged "at risk" of being removed from this specification draft.
- There is a <a href="http://lists.w3.org/Archives/Public/www-style/2010Dec/0239.html">related discussion</a> on the public mailing-list.
- </p -->
<h2 id="voice-char-props">Voice characteristic properties</h2>
<h3 id="voice-props-voice-family">The 'voice-family' property</h3>
<table class="propdef" summary="name: syntax">
@@ -1625,8 +1405,8 @@
<p>The 'voice-family' property specifies a comma-separated, prioritized list of values that
designate speech synthesis voices. (analog to 'font-family' in visual style sheets).</p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_voice"><code>voice</code> element</a> from
- the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_voice"><code>voice</code> element</a>
+ from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
<strong><name></strong>
@@ -1728,13 +1508,13 @@
<td>
<em>Value:</em>
</td>
- <td><percentage> | x-slow | slow | medium | fast | x-fast | inherit</td>
+ <td>normal | <percentage> | x-slow | slow | medium | fast | x-fast | inherit</td>
</tr>
<tr>
<td>
<em>Initial:</em>
</td>
- <td>medium</td>
+ <td>normal</td>
</tr>
<tr>
<td>
@@ -1768,19 +1548,27 @@
</tr>
</tbody>
</table>
- <p>The 'voice-rate' property manipulates the speed of generated synthetic speech in terms of
+ <p>The 'voice-rate' property manipulates the rate of generated synthetic speech in terms of
words per minute. The default rate for a given 'voice-family' is processor-specific, and
depends on the language, dialect and on the "personality" of the voice.</p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>rate</code> attribute of
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>rate</code> attribute of
the <code>prosody</code> element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
+ <strong>normal</strong>
+ </dt>
+ <dd>
+ <p>Represents the default rate produced by the speech synthesizer for the currently active
+ voice.</p>
+ </dd>
+ <dt>
<strong><percentage></strong>
</dt>
<dd>
<p>Only positive <a href="#percentage-def">percentage</a> values are allowed. Computed
- values are calculated relative to the default speaking rate for the voice.</p>
+ values are calculated relative to the default speaking rate for the voice (the "normal"
+ computed value).</p>
<p class="note"> Note that a leading "+" sign does not denote an increment, for example +50%
is equivalent to 50% (i.e. the computed value equals the inherited value times 0.5, which
is half the normal rate of the voice). </p>
@@ -1852,7 +1640,7 @@
depends on the 'voice-family'. For example, the default average pitch for a common male voice
is around 120Hz, whereas it is around 210Hz for a female voice.</p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>pitch</code> attribute of
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>pitch</code> attribute of
the <code>prosody</code> element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
@@ -1864,10 +1652,6 @@
href="#frequency-def">frequency</a> values defined in [[!CSS3VAL]]. Only positive values
are allowed. </p>
</dd>
- <!-- dd>
- This is an absolute value that specifies the average pitch of the speaking voice in Hertz.
- It must be <non-negative number> followed by the "Hz" suffix.
- </dd -->
<dt>
<strong><percentage></strong>
</dt>
@@ -1968,7 +1752,7 @@
generated speech output typically increases for a highly animated voice, for example when
variations in inflection are used to convey meaning and emphasis in speech. </p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>range</code> attribute of
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>range</code> attribute of
the <code>prosody</code> element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
@@ -2071,7 +1855,7 @@
using a combination of pitch change, timing changes, loudness and other acoustic differences.
The precise meaning of the values therefore depend on the language being spoken. </p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_emphasis"><code>emphasis</code>
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_emphasis"><code>emphasis</code>
element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
@@ -2090,7 +1874,7 @@
<dd>
<p>These values are monotonically non-decreasing in strength. Their application results in
more emphasis than what the speech synthesizer would normally produce (i.e. more than the
- value corresponding to 'auto'). </p>
+ value corresponding to 'normal'). </p>
</dd>
<dt>
<strong>reduced</strong>
@@ -2101,7 +1885,7 @@
</dl>
<div class="example">
<pre>
-span.default-emphasis { voice-stress: auto; }
+span.default-emphasis { voice-stress: normal; }
span.lowered-emphasis { voice-stress: reduced; }
span.removed-emphasis { voice-stress: none; }
span.normal-emphasis { voice-stress: moderate; }
@@ -2183,7 +1967,7 @@
specified, this property takes precedence over the 'voice-rate' property and should be used to
determine the speaking rate of the voice. </p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_prosody"><code>duration</code> attribute
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_prosody"><code>duration</code> attribute
of the <code>prosody</code> element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<dl>
<dt>
@@ -2211,12 +1995,7 @@
Unfortunately this introduces a dependency on a feature specific to CSS3-Lists. There is a <a
href="http://lists.w3.org/Archives/Public/www-style/2011Feb/0195.html">related
discussion</a> on the public mailing-list. </p>
- <h2 id="pronunciation"> Pronunciation, phonemes
- <!--
- Phonetics: 'phonemes' and <a href="#phonetic-alphabet"
- >'@phonetic-alphabet'</a>
- -->
- </h2>
+ <h2 id="pronunciation"> Pronunciation, phonemes </h2>
<p class="note">Note that this entire section is non-normative.</p>
<p> CSS does not specify how to define the pronunciation (expressed using a well-defined
phonetic alphabet) of a particular piece of text within the markup document. A "phonemes"
@@ -2234,7 +2013,7 @@
text-pronunciation associations. At the time of writing, such mechanism isn't formally defined
in the W3C HTML standard(s). However, the <a href="http://idpf.org/epub/30">EPUB 3.0 draft
specification</a> allows (x)HTML5 documents to contain SSML-derived attributes (<a
- href="http://www.w3.org/TR/speech-synthesis">Speech Synthesis Markup Language</a>) that
+ href="http://www.w3.org/TR/speech-synthesis11">Speech Synthesis Markup Language</a>) that
describe how to pronounce text based on a particular phonetic alphabet.</p>
<!-- p>
One avenue to explore is the use CSS to "bind" HTML text with a
@@ -2252,139 +2031,14 @@
concerns with the work done by the HTML-Audio and HTML-Speech
Incubator Groups.
</p -->
- <!--
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td>
- <dfn id="phonemes">phonemes</dfn>
- </td>
- </tr>
- <tr>
- <td>
- <em>Value:</em>
- </td>
- <td><string></td>
- </tr>
- <tr>
- <td>
- <em>Initial:</em>
- </td>
- <td>
- <em>implementation-dependent</em>
- </td>
- </tr>
- <tr>
- <td>
- <em>Applies to:</em>
- </td>
- <td>all elements</td>
- </tr>
- <tr>
- <td>
- <em>Inherited:</em>
- </td>
- <td>no</td>
- </tr>
- <tr>
- <td>
- <em>Percentages:</em>
- </td>
- <td>N/A</td>
- </tr>
- <tr>
- <td>
- <em>Media:</em>
- </td>
- <td>speech</td>
- </tr>
- <tr>
- <td>
- <em>Computed value:</em>
- </td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
- <p>This allows authors to specify a phonetic pronunciation for the text contained by the
- corresponding element.</p>
- <p>Values have the following meanings:</p>
- <dl>
- <dt>
- <strong><string></strong>
- </dt>
- <dd> A character string that describes a pronunciation based on the specified <a
- href="#phonetic-alphabet">'@phonetic-alphabet'</a>. </dd>
- </dl>
- <p class="issue" id="issue-phonemes">ISSUE: the 'phonemes' property covers functionality that
- arguably doesn't belong to CSS, as it breaks the principle of separation between content and
- presentation (i.e. any change in the source text must be echoed by an corresponding change in
- the content of the aural 'phonemes' property). The broader aspect of pronunciation lexicons
- would be better addressed in the content markup. For example, <a
- href="http://wiki.whatwg.org/wiki/RelExtensions">it is proposed</a> that formats like the
- W3C's own PLS standard should be supported by the link/rel mechanism. There is a <a
- href="http://lists.w3.org/Archives/Public/www-style/2011Jan/0248.html">related
- discussion</a> on the public mailing-list. </p>
- <h3 id="phonetic-alphabet">@phonetic-alphabet</h3>
- <p> A phonetic alphabet is a collection of symbols that represent the sounds of one or more
- human languages. The default alphabet for the pronunciation string of the 'phonemes' property
- is the International Phonetic Alphabet ("ipa"), corresponding to Unicode representations of
- the phonetic characters developed by the International Phonetic Association [<a href="#IPA"
- >IPA</a>]. The phonetic alphabet can be explicitly specified using the <a
- href="#phonetic-alphabet">'@phonetic-alphabet'</a> rule.</p>
- <p class="note"> Note that the alphabet is specified via an at-rule to avoid problems with
- inappropriate cascades that can occur if the alphabet was set via a
- property.</p>
- -->
- <!-- [[CSS3CASCADE]] -->
- <!--
- <div class="example">
- <p>Example:</p>
- <pre>
- @phonetic-alphabet "ipa";
- #tomato { phonemes: "t\0252 m\0251 to\028a " }
- </pre>
- <p>This will direct the speech synthesizer to replace the default pronunciation by the
- corresponding sequence of 'phonemes' in the designated alphabet.</p>
- </div>
-
- <p>At most one <a href="#phonetic-alphabet">'@phonetic-alphabet'</a> rule can appear in style
- sheet and it must appear, when used, before any occurrence of the 'phonemes' property. The
- only valid values are the default "ipa" phonetic alphabet, and vendor-specific strings such as
- "x-organization" or "x-organization-alphabet". </p>
- -->
- <!-- p class="issue">ISSUE: we do not mention any other possible value
- for <a href="#phonetic-alphabet">'@phonetic-alphabet'</a>.
- SSML 1.0 defines "ipa" to be the only valid
- value - any other value should be added with the "x-" prefix. Do we
- want to follow this? Or do we allow some other values? SAMPA comes
- to my mind as a widely used ASCII alternative to IPA, but then: SAMPA
- is language-dependent, and it might be better to have X-SAMPA.</p -->
<h2 id="content">Inserted and replaced content</h2>
<p class="note">Note that this entire section is non-normative.</p>
- <!-- div class="issue">
- <p>ISSUE: should there be a CSS equivalent to the SSML <sub>
- element? This gives the author the means to replace one string with
- another as means to changing how something is spoken, e.g. "as-key"
- for "ASCII". A possible solution is a new CSS property 'say-instead'
- for instance:</p>
-
- <pre>
- say-instead: "as-key";
- </pre>
-
- <p>The drawback with this property is that it has to be applied to a
- specific instance of an element and can't be used more generally.
- In the longer term, the use of pronunciation lexicons would provide a
- better solution.</p>
- </div -->
<p>Sometimes, authors will want to specify a mapping from the source text into another string
prior to the application of the regular pronunciation rules. This may be used for uncommon
abbreviations or acronyms which are unlikely to be recognized by the synthesizer. The
'content' property can be used to replace one string by another. </p>
<p class="note"> Note that the functionality provided by this property is related to the <a
- href="http://www.w3.org/TR/speech-synthesis/#edef_sub"><code>alias</code> attribute of the
+ href="http://www.w3.org/TR/speech-synthesis11/#edef_sub"><code>alias</code> attribute of the
<code>sub</code> element</a> from the SSML markup language [[!SPEECH-SYNTHESIS]]. </p>
<p> In the following example, the abbreviation is rendered using the content of the title
attribute instead of the element's content:</p>
@@ -2430,104 +2084,7 @@
</div>
<p>Detailed information can be found in the CSS3 Generated and Replaced Content Module
[[CSS3GENCON]].</p>
- <!--
- <h2 id="interpret-as-props">Interpretation property:
- <a href="#interpret-as">'interpret-as'</a></h2>
- <table class="propdef" summary="name: syntax">
- <tbody>
- <tr>
- <td>Name:</td>
- <td><dfn id="interpret-as">interpret-as</dfn></td>
- </tr>
- <tr>
- <td><em>Value:</em></td>
- <td><date> | <time> | currency | measure | telephone |
- address | name | net</td>
- </tr>
- <tr>
- <td><em>Initial:</em></td>
- <td><em>implementation-dependent</em></td>
- </tr>
- <tr>
- <td><em>Applies to:</em></td>
- <td>all elements</td>
- </tr>
- <tr>
- <td><em>Inherited:</em></td>
- <td>no</td>
- </tr>
- <tr>
- <td><em>Percentages:</em></td>
- <td>N/A</td>
- </tr>
- <tr>
- <td><em>Media:</em></td>
- <td>speech</td>
- </tr>
- <tr>
- <td><em>Computed value:</em></td>
- <td>specified value</td>
- </tr>
- </tbody>
- </table>
-
- <p>This provides a hint to the speech platform as to how to
- interpret the corresponding element's content and is useful when
- the content is ambigous and liable to be misinterpreted. Values
- have the following meanings:</p>
-
- <dl>
- <dt><strong><date></strong></dt>
-
- <dd>
-
- <p>Specifies a date using the same syntax as SSML. For instance,
- "date(dmy)" when applied to "12/11/2002" would be interpreted as
- 12th November 2002.</p>
- </dd>
-
- <dt><strong><time></strong></dt>
-
- <dd>
-
- <p>Specifies a time using the same syntax as SSML. For instance,
- "time(hm)" when applied to "06:30" would be interpreted as 6 hours
- and 30 minutes.</p>
- </dd>
-
- <dt><strong>currency</strong></dt>
- <dd>A hint that the element's content is a currency value.</dd>
-
- <dt><strong>measure</strong></dt>
- <dd>A hint that the element's content is a measurement.</dd>
-
- <dt><strong>telephone</strong></dt>
- <dd>A hint that the element's content is a telephone number.</dd>
-
- <dt><strong>address</strong></dt>
- <dd>A hint that the element's content is an address.</dd>
-
- <dt><strong>name</strong></dt>
- <dd>A hint that the element's content is a proper name of a person,
- company etc.</dd>
-
- <dt><strong>net</strong></dt>
- <dd>A hint that the element's content is a URI such as an email
- address or an http URI.</dd>
- </dl>
-
- <p class="issue">The above definitions were taken from the SSML
- specification dated 23 August 2002, but there is continuing
- uncertainty as to how the SSML "say-as" mechanism will end up. If
- SSML doesn't provide the same set of input types, then it may be
- necessary to transform the content before it can be directly mapped
- into SSML. We may just choose to drop 'interpret-as' until a future
- revision of this specification when the details of the say-as
- element have been clarified.</p>
- -->
<hr title="Separator from footer" />
- <!-- h2 class="no-num" id="profiles">Appendix A — Profiles</h2>
- <p>TBD</p -->
<h2 class="no-num" id="property-index">Appendix A — Property index</h2>
<!-- properties -->
<p>The following properties are defined in other modules or specifications:</p>
@@ -2536,28 +2093,23 @@
<dfn id="display-def">
<a href="http://www.w3.org/TR/CSS21/visuren.html#display-prop"> display </a></dfn>
[[!CSS21]] </li>
- <!-- li><dfn id="display-def">display</dfn> [[CSS3BOX]]</li -->
<li>
<dfn id="padding-def">
<a href="http://www.w3.org/TR/CSS21/box.html#padding-properties"> padding </a></dfn>
[[!CSS21]] </li>
- <!-- li><dfn id="padding-def">padding</dfn> [[CSS3BOX]]</li -->
<li>
<dfn id="border-def">
<a href="http://www.w3.org/TR/CSS21/box.html#border-properties"> border </a></dfn>
[[!CSS21]] </li>
- <!-- li><dfn id="border-def">border</dfn> [[CSS3BOX]]</li -->
<li>
<dfn id="margin-def">
<a href="http://www.w3.org/TR/CSS21/box.html#margin-properties"> margin </a></dfn>
[[!CSS21]] </li>
- <!-- li><dfn id="margin-def">margin</dfn> [[CSS3BOX]]</li -->
<li>
<dfn id="font-family-def">
<a href="http://www.w3.org/TR/CSS21/fonts.html#font-family-prop"> font-family </a></dfn>
[[!CSS21]] </li>
<li><dfn id="content-def">content</dfn> [[CSS3GENCON]]</li>
- <!-- li><dfn id="visibility-def">visibility</dfn> [[!CSS3BOX]]</li -->
</ul>
<p>The following definitions are provided by other modules or specifications:</p>
<ul>
@@ -2747,10 +2299,6 @@
end of the CR period. </p>
<p>Features may/will also be dropped if adequate/sufficient (by judgment of CSS WG) tests have
not been produced for those feature(s) by the end of the CR period. </p>
- <!-- h2 class="no-num" id="acks">Appendix D — Acknowledgements</h2>
- <p>The editors would like to thank the members of the W3C Voice Browser and Cascading Style
- Sheets working groups for their assistance in preparing this new draft. Special thanks to
- Ellen Eide (IBM) for her detailed comments.</p -->
<h2 class="no-num" id="changes">Appendix D — Changes from previous draft</h2>
<p> Note that the <a href="http://www.w3.org/TR/2011/WD-css3-speech-20110419">previous Working
Draft</a> includes <a href="http://www.w3.org/TR/2011/WD-css3-speech-20110419#changes">its
@@ -2770,6 +2318,7 @@
<li>Corrected the [initial] values for 'voice-pitch-range' and 'voice-pitch' to "medium".</li>
<li>Added an "auto" value to 'voice-duration', which is the [initial] property value as
well.</li>
+ <li>Added the 'normal' value for voice-rate ("default" in SSML 1.1).</li>
<li>Renamed voice-family fields to be consistent with SSML.</li>
<li>Improved the 'voice-family' selection algorithm to cater for language changes.</li>
<li>Added a new section to define the relationship of this specification with CSS2.1.</li>
@@ -2777,7 +2326,7 @@
<li>Cleaned-up the list of module dependencies, and removed redundant "module dependencies"
section.</li>
<li>Improved the pause collapsing prose, removed redundant paragraphs.</li>
- <li>Added the "normal" value for 'voice-stress'.</li>
+ <li>Added the missing 'normal' value for 'voice-stress'.</li>
<li>Improved document structure by adding sub-sections.</li>
<li>Fixed typos and made other minor edits.</li>
</ul>
@@ -2807,12 +2356,6 @@
<h2 class="no-num" id="references">Appendix E — References</h2>
<h3 class="no-num">Normative references</h3>
<!--normative-->
- <!-- dl class="bibliography">
- <dt id="IPA">[IPA]</dt>
- <dd>
- <a href="http://www.langsci.ucl.ac.uk/ipa/">International Phonetic Association</a>
- </dd>
- </dl -->
<h3 class="no-num">Other references</h3>
<!--informative-->
</body>
Received on Wednesday, 11 May 2011 17:15:40 UTC