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Re: [css3-speech] cues, volume control

From: Daniel Weck <daniel.weck@gmail.com>
Date: Wed, 16 Mar 2011 22:55:11 +0000
Message-Id: <51DEF75F-EF0D-4EDF-8084-96D5247E01BD@gmail.com>
To: "www-style@w3.org list" <www-style@w3.org>
Heads-up: I received no objection against the proposal quoted below,  
and no feedback regarding the issue either [1]. I will update the  
editor's draft of CSS3-Speech soon, based on what I think is the best  
direction. Obviously, reviews / comments are still very much welcome.
Regards, Daniel

[1]
http://dev.w3.org/csswg/css3-speech/Overview.html#issue-voice-cues-volume

On 5 Feb 2011, at 12:37, Daniel Weck wrote:

> Dear all,
> I don't understand the rationale for this particular statement, in  
> [1]:
>
> "
> Note that ‘voice-volume’ does not apply to audio cues for which  
> there is a separate means to set loudness (absolute, or relative to  
> ‘voice-volume’).
> "
>
> I totally agree with audio cues [2] adjusting their output levels  
> relatively to the 'voice-volume', but why should they be able to set  
> absolute volume values ?
>
> For example, a text with "voice-volume:silent" should have its cues  
> muted as well, yet audio cues can override this. By analogy to the  
> visual 'visibility' property (and by virtue of the "aural box  
> model" [3]), the borders of an invisible element are now shown: the  
> entire element (content, padding, border and margin) remains  
> involved in the layout, but is "transparent" (which is equivalent to  
> "silent" in the aural dimension).
>
> If nobody objects, I would like to restrict volume control for audio  
> cues in relative terms only (percentage applicable to the voice- 
> volume value).
>
> Sorry if I am missing a point here.
> Many thanks, Daniel
>
> [1]
> http://dev.w3.org/csswg/css3-speech/#voice-volume
>
> [2]
> http://dev.w3.org/csswg/css3-speech/#cue-props
>
> [3]
> http://dev.w3.org/csswg/css3-speech/#aural-model

Daniel Weck
daniel.weck@gmail.com
Received on Wednesday, 16 March 2011 22:55:47 GMT

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