CSS Aural Media/ Style Sheets

CSS Aural Media or CSS Style Sheets are used to attach specific sound style features to specific document elements. It uses speech synthesis and sound effect to facilitate users to listen to information instead of reading them. So, it is very useful for visually impaired people.

Aural media can be used in following:

Used by blind or visually impaired people
Help users learning to read and right pronunciation
Training
Help users who have reading problems
Facilitates web access in vehicles
Home entertainment
Used by print-impaired communities
Medical documentation
Industrial documentation

Aural Media Properties

Following is a list of aural media properties:

property	explanation	value
azimuth	it is set where the sound should come from.	angle left-side far-left left center-left center center-right right far-right right-side behind leftwardsrightwards
cue	it is used to set the cue properties in one declaration.	cue-beforecue-after
cue-after	it is used to specify a sound to be played after speaking an element's content.	none url
cue-before	it is used to specify a sound to be played before speaking an element's content.	noneurl
elevation	it is set where the sound should come from.	angle below level above higherlower
pause	it is used to set the pause properties in one declaration.	pause-beforepause-after
pause-after	it is used to specify a pause after speaking an element's content.	time %
pause-before	it is used to specify a pause before speaking an element's content.	time %
pitch	it is used to specify the pitch of the speaking voice.	frequency x-low low medium high x-high
pitch-range	it is used to specify the variation of the speaking voice. it specifies whether he speaking voice is monotone voice or animated voice.	number
play-during	it specifies a sound to be played while speaking an element's content.	auto none url mix repeat
richness	it is used to specifies the sound quality of the speaking voice. it specifies that the voice is rich or thin.	number
speak	it specifies whether content will render aurally.	normal nonespell-out
speak-header	it is used to specify how to handle table headers. it also specifies whether the headers be spoken before every cell, or only before a cell with a different header than the previous cell.	always once
speak-numeral	it specifies how to speak numbers.	digits continuous
speak-punctuation	it is used to specify how to speak punctuation characters.	nonecode
speech-rate	it specifies the speed of the speaking.	number x-slow slow medium fast x-fast fasterslower
stress	it is used to specify the "stress" in the speaking voice.	number
voice-family	it specifies the voice family of the speaking voice.	specific-voice generic-voice
volume	it specifies the volume of the speaking voice.	number % silent x-soft soft medium loud x-loud