- From: Daniel Weck via cvs-syncmail <cvsmail@w3.org>
- Date: Thu, 28 Apr 2011 17:09:14 +0000
- To: public-css-commits@w3.org
Update of /sources/public/csswg/css3-speech
In directory hutz:/tmp/cvs-serv13080
Modified Files:
Overview.html Overview.src.html
Log Message:
Fixed emphasis / stress (was missing a default "auto" value representing the default, speech-synthesizer-generated emphasis, which depends on languages)
Index: Overview.html
===================================================================
RCS file: /sources/public/csswg/css3-speech/Overview.html,v
retrieving revision 1.35
retrieving revision 1.36
diff -u -d -r1.35 -r1.36
--- Overview.html 28 Apr 2011 16:09:38 -0000 1.35
+++ Overview.html 28 Apr 2011 17:09:11 -0000 1.36
@@ -337,14 +337,14 @@
p.peter { voice-balance: right; voice-family: male }
p.goat { voice-volume: soft }
</pre>
-
- <p>This will direct the speech synthesizer to speak headers in a voice (a
- kind of "audio font") called "paul". Before speaking the headers, a sound
- sample will be played from the given URL. Paragraphs with class "heidi"
- will appear to come from the left (if the sound system is capable of
- stereo), and paragraphs of class "peter" from the right. Paragraphs with
- class "goat" will be played softly.</p>
</div>
+
+ <p>This will direct the speech synthesizer to speak headers in a voice (a
+ kind of "audio font") called "paul". Before speaking the headers, a sound
+ sample will be played from the given URL. Paragraphs with class "heidi"
+ will appear to come from the left (if the sound system is capable of
+ stereo), and paragraphs of class "peter" from the right. Paragraphs with
+ class "goat" will be played softly.</p>
<!-- p class="note">
Note that the "aural" media type is deprecated, as defined in the informative CSS2.1 Aural appendix [[!CSS21]]).
</p -->
@@ -1049,12 +1049,13 @@
<h3 id=collapsing><span class=secno>6.1. </span>Collapsing pauses</h3>
- <p>The pause defines the minimum distance of the aural "box" to the aural
+ <p> The pause defines the minimum distance of the aural "box" to the aural
"boxes" before and after it. Adjoining pauses are merged by selecting the
- strongest named break and the longest absolute time interval. Thus
- "strong" is selected when comparing "strong" and "weak", "1s" is selected
- when comparing "1s" and "250ms", and "strong" and "250ms" take effect
- additively when comparing "strong" and "250ms".
+ strongest named break and the longest absolute time interval.
+
+ <p class=note> For example, "strong" is selected when comparing "strong"
+ and "weak", "1s" is selected when comparing "1s" and "250ms", and "strong"
+ and "250ms" take effect additively when comparing "strong" and "250ms".
<p>The following pauses are adjoining:
@@ -2066,14 +2067,12 @@
<td>specified value
</table>
- <p>Specifies variation in average pitch. The perceived pitch of a human
- voice is determined by the fundamental frequency and typically has a value
- of 120Hz for a male voice and 210Hz for a female voice. Human languages
- are spoken with varying inflection and pitch; these variations convey
- additional meaning and emphasis. Thus, a highly animated voice, i.e., one
- that is heavily inflected, displays a high pitch range. This property
- specifies the range over which these variations occur, i.e., how much the
- fundamental frequency may deviate from the average pitch.
+ <p>Specifies variation in average pitch. Human languages are spoken with
+ varying inflection and pitch; these variations convey additional meaning
+ and emphasis. Thus, a highly animated voice, i.e., one that is heavily
+ inflected, displays a high pitch range. This property specifies the range
+ over which these variations occur, i.e., how much the fundamental
+ frequency may deviate from the average pitch.
<p>Values have the following meanings:
@@ -2120,9 +2119,7 @@
<p class=note> Note that a semitone is half of a tone (a half step) on the
standard diatonic scale. A semitone doesn't correspond to a fixed value in
Hertz: instead, the ratio between two consecutive frequencies separated by
- exactly one semitone is approximately 1.05946 (the actual arithmetics
- involved are beyond the scope of this specification, please refer to
- existing literature on that subject).
+ exactly one semitone is approximately 1.05946 (the twelfth root of two).
<table class=propdef summary="name: syntax">
<tbody>
@@ -2134,12 +2131,12 @@
<tr>
<td><em>Value:</em>
- <td>strong | moderate | none | reduced | inherit
+ <td>normal | strong | moderate | none | reduced | inherit
<tr>
<td><em>Initial:</em>
- <td>moderate
+ <td>auto
<tr>
<td><em>Applies to:</em>
@@ -2167,27 +2164,57 @@
<td>specified value
</table>
- <p>Indicates the strength of emphasis to be applied. Emphasis is indicated
+ <p>Indicates the strength of emphasis to be applied. Emphasis is applied
using a combination of pitch change, timing changes, loudness and other
- acoustic differences) that varies from one language to the next.
+ acoustic differences, and is dependent on the language being spoken.
<p>Values have the following meanings:
<dl>
- <dt><strong>none</strong>, <strong>moderate</strong> and
- <strong>strong</strong>
+ <dt><strong>auto</strong>
- <dd>These are monotonically non-decreasing in strength, with the precise
- meanings dependent on language being spoken. The value ‘<code
- class=property>none</code>’ inhibits the synthesizer from
- emphasizing words it would normally emphasize.
+ <dd>Represents the default emphasis produced by the speech synthesizer.
+
+ <dt><strong>none</strong>
+
+ <dd>Inhibits the synthesizer from emphasizing words it would normally
+ emphasize.
+
+ <dt><strong>moderate</strong> and <strong>strong</strong>
+
+ <dd>These are monotonically non-decreasing in strength.
<dt><strong>reduced</strong>
- <dd>Effectively the opposite of emphasizing a word. For example, when the
- phrase "going to" is reduced it may be spoken as "gonna".
+ <dd>Effectively the opposite of emphasizing a word.
</dl>
+ <div class=example>
+ <p>Example:</p>
+
+ <pre>
+span.default-emphasis { voice-stress: auto; }
+span.lowered-emphasis { voice-stress: reduced; }
+span.removed-emphasis { voice-stress: none; }
+span.normal-emphasis { voice-stress: moderate; }
+span.huge-emphasis { voice-stress: strong; }
+
+...
+
+<p>This is a big car.</p>
+<!-- The speech output from the line above is identical to the line below: -->
+<p>This is a <span class="default-emphasis">big</span> car.</p>
+
+<p>This car is <span class="lowered-emphasis">massive</span>!</p>
+<!-- The "span" below is totally de-emphasized, whereas the emphasis in the line above is only reduced: -->
+<p>This car is <span class="removed-emphasis">massive</span>!</p>
+
+<!-- The lines below demonstrate increasing levels of emphasis: -->
+<p>This is a <span class="normal-emphasis">big</span> car!</p>
+<p>This is a <span class="huge-emphasis">big</span> car!!!</p>
+</pre>
+ </div>
+
<h2 id=duration-props><span class=secno>10. </span>Duration property:
‘<a href="#voice-duration"><code
class=property>voice-duration</code></a>’</h2>
@@ -2889,9 +2916,9 @@
<tr valign=baseline>
<td><a class=property href="#voice-stress">voice-stress</a>
- <td>strong | moderate | none | reduced | inherit
+ <td>normal | strong | moderate | none | reduced | inherit
- <td>moderate
+ <td>auto
<td>all elements
Index: Overview.src.html
===================================================================
RCS file: /sources/public/csswg/css3-speech/Overview.src.html,v
retrieving revision 1.36
retrieving revision 1.37
diff -u -d -r1.36 -r1.37
--- Overview.src.html 28 Apr 2011 16:09:38 -0000 1.36
+++ Overview.src.html 28 Apr 2011 17:09:11 -0000 1.37
@@ -183,6 +183,7 @@
p.peter { voice-balance: right; voice-family: male }
p.goat { voice-volume: soft }
</pre>
+</div>
<p>This will direct the speech synthesizer to speak headers in a
voice (a kind of "audio font") called "paul". Before speaking the
@@ -827,14 +828,20 @@
<h3 id="collapsing">Collapsing pauses</h3>
-<p>The pause defines the minimum distance of the aural "box" to the
+<p>
+The pause defines the minimum distance of the aural "box" to the
aural "boxes" before and after it.
Adjoining pauses are merged
by selecting the strongest named break and
-the longest absolute time interval. Thus "strong" is selected when
+the longest absolute time interval.
+</p>
+
+<p class="note">
+For example, "strong" is selected when
comparing "strong" and "weak", "1s" is selected when comparing "1s"
and "250ms", and "strong" and "250ms" take effect additively when
-comparing "strong" and "250ms".</p>
+comparing "strong" and "250ms".
+</p>
<p>The following pauses are adjoining:</p>
@@ -1760,10 +1767,8 @@
</tbody>
</table>
-<p>Specifies variation in average pitch. The perceived pitch of a
-human voice is determined by the fundamental frequency and
-typically has a value of 120Hz for a male voice and 210Hz for a
-female voice. Human languages are spoken with varying inflection
+<p>Specifies variation in average pitch.
+Human languages are spoken with varying inflection
and pitch; these variations convey additional meaning and emphasis.
Thus, a highly animated voice, i.e., one that is heavily inflected,
displays a high pitch range. This property specifies the range over
@@ -1830,8 +1835,7 @@
Note that a semitone is half of a tone (a half step) on the standard diatonic scale.
A semitone doesn't correspond to a fixed value in Hertz: instead,
the ratio between two consecutive frequencies separated by exactly one semitone
-is approximately 1.05946 (the actual arithmetics involved are beyond the scope of this specification,
-please refer to existing literature on that subject).
+is approximately 1.05946 (the twelfth root of two).
</p>
<table class="propdef" summary="name: syntax">
@@ -1842,11 +1846,11 @@
</tr>
<tr>
<td><em>Value:</em></td>
-<td>strong | moderate | none | reduced | inherit</td>
+<td>normal | strong | moderate | none | reduced | inherit</td>
</tr>
<tr>
<td><em>Initial:</em></td>
-<td>moderate</td>
+<td>auto</td>
</tr>
<tr>
<td><em>Applies to:</em></td>
@@ -1872,29 +1876,55 @@
</table>
<p>Indicates the strength of emphasis to be applied. Emphasis
-is indicated using a combination of pitch change, timing changes,
-loudness and other acoustic differences) that varies from one
-language to the next.</p>
+is applied using a combination of pitch change, timing changes,
+loudness and other acoustic differences, and is dependent on the language being spoken.
+</p>
<p>Values have the following meanings:</p>
<dl>
-<dt><strong>none</strong>,
-<strong>moderate</strong> and
-<strong>strong</strong></dt>
-<dd>These are monotonically non-decreasing in strength, with
-the precise meanings dependent on language being spoken.
-The value 'none' inhibits the synthesizer from emphasizing
+<dt><strong>auto</strong></dt>
+<dd>Represents the default emphasis produced by the speech synthesizer.</dd>
+
+<dt><strong>none</strong></dt>
+<dd>Inhibits the synthesizer from emphasizing
words it would normally emphasize.</dd>
-<dt><strong>reduced</strong></dt>
+<dt><strong>moderate</strong> and
+<strong>strong</strong></dt>
+<dd>These are monotonically non-decreasing in strength.
+</dd>
-<dd>Effectively the opposite of emphasizing a word. For example,
-when the phrase "going to" is reduced it may be spoken as
-"gonna".</dd>
+<dt><strong>reduced</strong></dt>
+<dd>Effectively the opposite of emphasizing a word.</dd>
</dl>
+<div class="example">
+<p>Example:</p>
+<pre>
+span.default-emphasis { voice-stress: auto; }
+span.lowered-emphasis { voice-stress: reduced; }
+span.removed-emphasis { voice-stress: none; }
+span.normal-emphasis { voice-stress: moderate; }
+span.huge-emphasis { voice-stress: strong; }
+
+...
+
+<p>This is a big car.</p>
+<!-- The speech output from the line above is identical to the line below: -->
+<p>This is a <span class="default-emphasis">big</span> car.</p>
+
+<p>This car is <span class="lowered-emphasis">massive</span>!</p>
+<!-- The "span" below is totally de-emphasized, whereas the emphasis in the line above is only reduced: -->
+<p>This car is <span class="removed-emphasis">massive</span>!</p>
+
+<!-- The lines below demonstrate increasing levels of emphasis: -->
+<p>This is a <span class="normal-emphasis">big</span> car!</p>
+<p>This is a <span class="huge-emphasis">big</span> car!!!</p>
+</pre>
+</div>
+
<h2 id="duration-props"><span class="secno">10. </span>Duration property:
'voice-duration'</h2>
Received on Thursday, 28 April 2011 17:09:15 UTC