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CSS2 Aural Reference

Aural Style Sheets

Aural style sheets use a combination of speech synthesis and sound effects to make the user listen to information, instead of reading information.
Aural presentation can be used:
  • by blind people
  • to help users learning to read
  • to help users who have reading problems
  • for home entertainment
  • in the car
  • by print-impaired communities
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).
An example of an Aural style sheet:

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

The example above will make the speech synthesizer play a sound, then speak the headers in a very rich male voice.

CSS2 Aural Reference

W3C: The number in the "W3C" column indicates in which CSS recommendation the property is defined (CSS1 or CSS2).

Property Description Values W3C
azimuth Sets where the sound/voices should come from (horizontally) angle
left-side
far-left
left
center-left
center
center-right
right
far-right
right-side
behind
leftwards
rightwards
2
cue A shorthand property for setting the cue-before and cue-after properties in one declaration cue-before
cue-after
2
cue-after Specifies a sound to be played after speaking an element's content to delimit it from other none
url
2
cue-before Specifies a sound to be played before speaking an element's content to delimit it from other none
url
2
elevation Sets where the sound/voices should come from (vertically) angle
below
level
above
higher
lower 
2
pause A shorthand property for setting the pause-before and pause-after properties in one declaration pause-before
pause-after
2
pause-after Specifies a pause after speaking an element's content time
%
2
pause-before Specifies a pause before speaking an element's content time
%
2
pitch Specifies the speaking voice frequency
x-low
low
medium
high
x-high 
2
pitch-range Specifies the variation in the speaking voice. (Monotone voice or animated voice?) number 2
play-during Specifies a sound to be played while speaking an element's content auto
none
url
mix
repeat
2
richness Specifies the richness in the speaking voice. (Rich voice or thin voice?) number 2
speak Specifies whether content will render aurally normal
none
spell-out
2
speak-header 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 always
once
2
speak-numeral Specifies how to speak numbers digits
continuous
2
speak-punctuation Specifies how to speak punctuation characters none
code
2
speech-rate Specifies the speed of the speaking number
x-slow
slow
medium
fast
x-fast
faster
slower 
2
stress Specifies the "stress" in the speaking voice number 2
voice-family A prioritized list of voice family names that contain specific voices specific-voice
generic-voice
2
volume Specifies the volume of the speaking number
%
silent
x-soft
soft
medium
loud
x-loud 
2
CSS2 Aural Reference Reviewed by 1000sourcecodes on 09:27 Rating: 5
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