1.4 sounds.

Have we adequately addressed this one?????
 
 
Gregg
 
 
  3. Consider guideline 1.4 for which no SC is available at level 1.
  The SC at level 2 states that a mechanism to turn off background audio
that plays automatically is 
available. But if there is such background audio content, even minimum
accessibility levels cannot be 
attained for a screen reader user who cannot listen to text being read out
by the screen reading 
software. 
  Example at http://www.scit.wlv.ac.uk/~c9581158/main.html
<http://www.scit.wlv.ac.uk/%7Ec9581158/main.html>  
  (Compression Technology in Multimedia)
  Now one can turn off Play Sounds in IE's accessibility options and the
background music stops and 
text content is accessible without any disturbance. Therefore a feature
built into user agent that 
interacts with the content marked up / authored in a particular way permits
this minimum accessibility. 
If the author duplicates the browser's feature   for turning off audio
content, it is merely a "nice thing to 
have" and should not be a measure of accessibility. 
   
  On the other hand if content is authored in a manner that the browser's
feature to turn off sound is 
rendered ineffective, then the onus should be on the author to provide a
feature to turn off sound and 
this should be a minimum accessibility requirement or a level 1 requirement.

 

 


Gregg

------------------------

Gregg C Vanderheiden Ph.D. 
Professor - Depts of Ind. Engr. & BioMed Engr.
Director - Trace R & D Center 
University of Wisconsin-Madison 
< <http://trace.wisc.edu/> http://trace.wisc.edu/> FAX 608/262-8848  
For a list of our list discussions http://trace.wisc.edu/lists/

The Player for my DSS sound file is at http://tinyurl.com/dho6b 

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