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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>CSS2 Aural Reference</h1>
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<h2>Aural Style Sheets</h2>
<p>Aural style sheets use a combination of speech synthesis and sound effects to
make the user listen to information, instead of reading information.</p>
<p>Aural presentation can be used:</p>
<ul>
<li>by blind people</li>
<li>to help users learning to read</li>
<li>to help users who have reading problems</li>
<li>for home entertainment</li>
<li>in the car</li>
<li>by print-impaired communities</li>
</ul>
<p>The aural presentation converts the document to plain text and feed this to a
screen reader (a program that reads all the characters on the screen).</p>
<p>An example of an Aural style sheet:</p>
<table width="100%" class="ex" cellspacing="0" border="1">
<tr>
<td>
<pre>h1, h2, h3, h4
{
voice-family: male;
richness: 80;
cue-before: url("beep.au")
}</pre>
</td>
</tr>
</table>
<p>The example above will make the speech synthesizer play a sound, then speak
the headers in a very rich male voice.</p>
<hr />
<h2>CSS2 Aural Reference</h2>
<p>
<b>W3C:</b> The number in the "W3C" column indicates in which CSS recommendation
the property is defined (CSS1 or CSS2).</p>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<th width="25%" align="left">Property</th>
<th width="30%" align="left">Description</th>
<th width="38%" align="left">Values</th>
<th width="7%" align="left">W3C</th>
</tr>
<tr>
<td valign="top">azimuth</td>
<td valign="top">Sets where the sound/voices should come from (horizontally)</td>
<td valign="top"><i>angle</i><br />
left-side<br />
far-left<br />
left<br />
center-left<br />
center<br />
center-right<br />
right<br />
far-right<br />
right-side<br />
behind<br />
leftwards<br />
rightwards</td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">cue</td>
<td valign="top">A shorthand property for setting the cue-before and
cue-after properties
in one declaration</td>
<td valign="top"><i>cue-before<br />
cue-after</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">cue-after</td>
<td valign="top">Specifies a sound to be played after speaking an element's
content to delimit it from other</td>
<td valign="top">none<br />
<i>url</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">cue-before</td>
<td valign="top">Specifies a sound to be played before speaking an element's
content to delimit it from other</td>
<td valign="top">none<br />
<i>url</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">elevation</td>
<td valign="top">Sets where the sound/voices should come from (vertically)</td>
<td valign="top">angle<br />
below<br />
level<br />
above<br />
higher<br />
lower </td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">pause</td>
<td valign="top">A shorthand property for setting the pause-before and
pause-after properties
in one declaration</td>
<td valign="top"><i>pause-before<br />
pause-after</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">pause-after</td>
<td valign="top">Specifies a pause after speaking an element's content</td>
<td valign="top"><i>time<br />
%</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">pause-before</td>
<td valign="top">Specifies a pause before speaking an element's content</td>
<td valign="top"><i>time<br />
%</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">pitch</td>
<td valign="top">Specifies the speaking voice</td>
<td valign="top"><i>frequency</i><br />
x-low<br />
low<br />
medium<br />
high<br />
x-high </td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">pitch-range</td>
<td valign="top">Specifies the variation in the speaking voice. (Monotone
voice or animated voice?)</td>
<td valign="top"><i>number</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">play-during</td>
<td valign="top">Specifies a sound to be played while speaking an element's
content</td>
<td valign="top">auto<br />
none<br />
<i>url</i><br />
mix<br />
repeat</td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">richness</td>
<td valign="top">Specifies the richness in the speaking voice. (Rich voice
or thin voice?)</td>
<td valign="top"><i>number</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">speak</td>
<td valign="top">Specifies whether content will render aurally</td>
<td valign="top">normal<br />
none<br />
spell-out</td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">speak-header</td>
<td valign="top">Specifies how to handle table headers. Should the headers
be spoken before every cell, or only before a cell with a different header
than the previous cell</td>
<td valign="top">always<br />
once<br />
</td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">speak-numeral</td>
<td valign="top">Specifies how to speak numbers</td>
<td valign="top">digits<br />
continuous</td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">speak-punctuation</td>
<td valign="top">Specifies how to speak punctuation characters</td>
<td valign="top">none<br />
code</td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">speech-rate</td>
<td valign="top">Specifies the speed of the speaking</td>
<td valign="top"><i>number</i><br />
x-slow<br />
slow<br />
medium<br />
fast<br />
x-fast<br />
faster<br />
slower </td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">stress</td>
<td valign="top">Specifies the "stress" in the speaking voice</td>
<td valign="top"><i>number</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">voice-family</td>
<td valign="top">A prioritized list of voice family names that contain
specific voices</td>
<td valign="top"><i>specific-voice<br />
generic-voice</i></td>
<td valign="top">2</td>
</tr>
<tr>
<td valign="top">volume</td>
<td valign="top">Specifies the volume of the speaking</td>
<td valign="top"><i>number<br />
</i><i>%<br />
</i>silent<br />
x-soft<br />
soft<br />
medium<br />
loud<br />
x-loud </td>
<td valign="top">2</td>
</tr>
</table>
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