CSS "Auditory Style Sheet Reference"

Auditory style sheets combine speech synthesis and sound effects to allow users to listen to information instead of reading it.

Audio presentation can be used for:

Blind individuals
Assisting users in learning to read
Helping users with reading difficulties
Home entertainment
In vehicles

Auditory presentation typically converts documents into plain text and then transmits them to screen readers (a program that reads all characters on the screen).

An example of an auditory style sheet:

Example

h1, h2, h3, h4 {
    voice-family: male;
    richness: 80;
    cue-before: url("beep.au")
}

The example above uses a speech synthesizer to play sounds, starting with a male voice.

CSS Auditory Reference

The CSS "table" lists the property definitions for the CSS version (CSS1 or CSS2).

Property	Description	Values	CSS
azimuth	Sets where the sound should come from	angle <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	2
cue	Sets cue properties in one declaration	cue-before<br>cue-after	2
cue-after	Specifies the sound to play after an element's content	none <br>url	2
cue-before	Specifies the sound to play before an element's content	none <br>url	2
elevation	Sets where the sound should come from	angle <br>below <br>level <br>above <br>higher <br>lower	2
pause	Sets pause properties in one declaration	pause-before<br>pause-after	2
pause-after	Specifies the pause after an element's content	time<br>%	2
pause-before	Specifies the pause before an element's content	time<br>%	2
pitch	Specifies the speaking voice	frequency <br>x-low <br>low <br>medium <br>high <br>x-high	2
pitch-range	Specifies the variation in the speaking voice (monotone or dynamic)	number	2
play-during	Specifies the sound to play while reading an element's content	auto <br>none <br>url <br>mix <br>repeat	2
richness	Specifies the richness of the speaking voice (full-bodied or thin)	number	2
speak	Specifies whether the content will be provided in an auditory manner	normal <br>none <br>spell-out	2
speak-header	This property sets or retrieves whether table headers are spoken before all cells or until an unrelated cell is reached.	always <br>once	2
speak-numeral	Sets or retrieves how numbers are pronounced.	digits <br>continuous	2
speak-punctuation	Sets or retrieves how punctuation characters are pronounced	none <br>code	2
speech-rate	Specifies the speaking rate	number <br>x-slow <br>slow <br>medium <br>fast <br>x-fast <br>faster <br>slower	2
stress	Specifies the "accent" in the speaking voice	number	2
voice-family	Sets or retrieves the current voice type	specific-voice<br>generic-voice	2
volume	Specifies the volume of the speech	number %silent <br>x-soft <br>soft <br>medium <br>loud <br>x-loud	2

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