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Looking at SC 1.4.2 Audio Control with "UI Context"

From: Peter Korn <peter.korn@oracle.com>
Date: Thu, 12 Jul 2012 17:40:36 -0700
Message-ID: <4FFF6E84.2000702@oracle.com>
To: public-wcag2ict-tf@w3.org
Hi gang,

SC *1.4.2 
<https://sites.google.com/site/wcag2ict/home/1-perceivable/14-make-it-easier-for-users-to-see-and-hear-content---including-separating-foreground-from-background/142-audio-control> 
**Audio Control *was one we reached consensus on.  However, I thought it 
would be useful to look at it with the new UI Context definition, to 
help evaluate that definition and where we might use it.  My thoughts on 
this can be found at the Applying UI Context 
<https://sites.google.com/site/wcag2ict/cross-cutting-issues-and-notes/user-interface-context/applying-ui-context> 
page in the first row, but to facilitate discussion, I reiterate them here.

Looking only at software, and doing a direct definition substitution for 
"web page" with the existing SC text, we get:

    If any audio on a [set of user interface elements and the presented
    information, within a product, that can be accessed using only
    navigation commands] plays automatically for more than 3 seconds,
    either a mechanism is available to pause or stop the audio, or a
    mechanism is available to control audio volume independently from
    the overall system volume level.

    /Note: /Since any [of the user interface elements or presented
    information that can be accessed using only navigation commands]
    that does not meet this success criterion can interfere with a
    user's ability to use the whole page, all content on the Web page
    (whether or not it is used to meet other success criteria) must meet
    this success criterion.

This seems workable to me, but I think "software user interface" is a 
cleaner substitution for this SC. Unless we were doing a global (or near 
global) "UI Context" substitution for "web page", I think it is better 
to keep our consensus text for this SC.


Thought?


Peter
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Received on Friday, 13 July 2012 00:41:13 GMT

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