<div class="propdef">

<table class="propinfo def">

<tr><td><em>Value:</em>&nbsp;&nbsp;<td>legal values &amp; syntax

<H3><span class="secno">1.4.3</span> <span id="shorthand">Shorthand properties</span></H3>

property"><dfn>shorthand properties</dfn></span>, meaning that they allow

authors to specify the values of several properties with a single

property.

<H3><span id="shorthand">Shorthand properties</span></H3>

property"><dfn>shorthand properties</dfn></span>, meaning that they allow

authors to specify the values of several properties with a single

property.

<p>The aural rendering of a document, already commonly used by the

blind and print-impaired communities, combines speech synthesis and

such aural presentation occurs by converting the document to plain

reader"><dfn>screen reader</dfn></span> -- software or hardware that

simply reads all the characters on the screen. This results in less

effective presentation than would be the case if the document

to help users learning to read or who have difficulty reading.

<p>When using aural properties, the <span class="index-inst"

space (sound surrounds) and a temporal space (one may specify sounds

before, during, and after other sounds). The CSS properties also

allow authors to vary the quality of synthesized speech (voice type,

<H3><span id="angles">Angles</span></H3>

<P>Angle values are denoted by <span class="index-def"

id="value-def-angle" data-dfn-type="type">&lt;angle&gt;</dfn></span> in the text.

Their format is a <span class="index-inst"

class="value-inst-number">&lt;number&gt;</span></span> immediately

followed by an angle unit identifier.

<H3><span id="times">Times</span></H3>

text.

Their format is a <span class="index-inst"

class="value-inst-number">&lt;number&gt;</span></span> immediately

followed by a time unit identifier.

<H3><span id="frequencies">Frequencies</span></H3>

<P>Frequency values are denoted by <span class="index-def"

id="value-def-frequency" data-dfn-type="type">&lt;frequency&gt;</dfn></span> in the text.

Their format is a <span class="index-inst"

class="value-inst-number">&lt;number&gt;</span></span> immediately

followed by a frequency unit identifier.

<!-- #include src=properties/volume.srb -->

median volume of the waveform. In other words, a highly inflected

voice at a volume of 50 might peak well above that. The overall values

are likely to be human adjustable for comfort, for example with a

<P>Values have the following meanings:</p>

<dl>

class="value-inst-number"><strong>&lt;number&gt;</strong>

</span></span>

<dd>Any number between '0' and '100'.

'0' represents the <em>minimum audible</em>

volume level and 100 corresponds to the

<em>maximum comfortable</em> level.

<dd>Percentage values are calculated relative to the inherited value,

and are then clipped to the range '0' to '100'.

<dt><strong>silent</strong>

[[-CSS3SPEECH]] for details.

<dl>

<dd>Expresses the pause in absolute time units (seconds and milliseconds).

<dd>Refers to the inverse of the value of the

<span class="propinst-speech-rate">'speech-rate'</span> property.

For example, if the speech-rate is 120 words per minute

delimit it. Values have the following meanings:</p>

<dl>

<dd> The URI must designate an auditory icon resource. If the URI resolves to something other than an audio file, such as an image, the resource should be ignored and the property treated as if it had the value 'none'.

<dt><strong>none</strong>

Values have the following meanings:</p>

<dl>

<dd>The sound designated by this <span class="index-inst"

class="value-inst-uri">&lt;uri&gt;</span></span> is played

as a background while the element's content is spoken.

<dt><strong>mix</strong>

<dd>When present, this keyword means that

the sound inherited from the parent element's <span

class="propinst-play-during">'play-during'</span> property continues

to play and the sound designated by the <span

class="value-inst-uri">&lt;uri&gt;</span></span> is mixed with it. If

'mix' is not specified, the element's background sound replaces

the parent's.

<P>Values have the following meanings:</p>

<dl>

<dd>Position is described in terms of an angle

within the range '-360deg' to '360deg'.

The value '0deg' means directly ahead in the center of the sound

<P>Values of this property have the following meanings:</p>

<dl>

<dd>Specifies the elevation as an angle, between '-90deg' and '90deg'.

'0deg' means on the forward horizon, which loosely means level with

the listener. '90deg' means directly overhead and '-90deg' means directly

the following meanings:</p>

<dl>

class="value-inst-number"><strong>&lt;number&gt;</strong></span></span>

<dd>Specifies the speaking rate in words per minute, a quantity that varies

somewhat by language but is nevertheless widely supported by speech

following meanings:</P>

<dl>

definition of"><dfn

id="value-def-generic-voice" data-dfn-type="type"><strong>&lt;generic-voice&gt;</strong></dfn></span>

<dd>Values are voice families. Possible values

are 'male', 'female', and 'child'.

<dd>Values are specific instances (e.g., comedian, trinoids, carlos, lani).

</dl>

<P>Values have the following meanings:</P>

<dl>

<dd>Specifies the average pitch of the speaking voice in hertz (Hz).

<dt><strong>x-low</strong>, <strong>low</strong>,

<strong>medium</strong>, <strong>high</strong>, <strong>x-high</strong>

<P>Values have the following meanings:</p>

<dl>

<dd>A value between '0' and '100'. A pitch range of '0' produces

a flat, monotonic voice. A pitch range of 50 produces normal

inflection. Pitch ranges greater than 50 produce animated voices.

<P>Values have the following meanings:</p>

<dl>

<dd>A value, between '0' and '100'. The meaning of values

depends on the language being spoken. For example,

a level of '50' for a

<P>Values have the following meanings:</p>

<dl>

<dd>A value between '0' and '100'.

The higher the value, the more the voice will carry.

A lower value will produce a soft, mellifluous voice.

$content = $3;

$elem = $&;

$entry = $1.$2.$3; # Only one of the three is non-empty

} else {

$entry = $content; # Assume content is index term

@names = split(/[, \t\n]+/, $name);

$comma = "";

foreach $n (@names) {

$comma = ", ";

}

print output "\n<dd>\n";