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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




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