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Re: [css3 speech] talk about media types

From: Daniel Weck <daniel.weck@gmail.com>
Date: Fri, 4 Feb 2011 11:36:38 +0000
Message-Id: <23AF2C69-95B8-4240-A711-89FBD6F4478F@gmail.com>
To: "www-style@w3.org list" <www-style@w3.org>
Hi Simon, with regards to implementations, please refer to:

http://lists.w3.org/Archives/Public/www-style/2011Feb/0061.html

As for the "speech" media type: it is mutually-exclusive with other  
types, but user-agents can still render in both aural and visual  
dimensions simultaneously, by virtue of the concept of "media groups":

http://www.w3.org/TR/CSS21/media.html#media-groups

http://www.w3.org/TR/CSS21/media.html#media-types

Note that I do not wish to formally point to the CSS3 Syntax Module,  
because it is currently in an under-maintained state, but here are the  
links anyway (for reference only):

http://www.w3.org/TR/css3-syntax/#media-groups

http://www.w3.org/TR/css3-syntax/#media-types

Now, as you know, there is a compiled table of CSS Speech-specific  
properties in the current draft, and below it there is a list of  
general CSS properties that affect TTS behavior:

http://dev.w3.org/csswg/css3-speech/#property-index

Once I have updated the latest online editor's draft, there will be a  
clear separation between "speak" and "speakability", which will  
describe more formally how "display:none" gets 'inherited' (so to  
speak) from the visual dimension into the aural space, and how authors  
can override this default behavior. I will also explicitly mention the  
impact of "visibility:hidden" in the aural dimension.

Thank you for your feedback !
Regards, Daniel


On 4 Feb 2011, at 04:32, Simon Fraser wrote:

> I  was initially rather confused about the interactions between the  
> "aural box model" and the "visual box model" when reading the speech  
> draft (<http://dev.w3.org/csswg/css3-speech/>) because I wasn't  
> thinking about the speech media type.
>
> I think the spec needs to mention the speech media type in the  
> introduction, and how this impacts which properties can influence  
> the spoken presentation of a page. A link to a table of CSS  
> properties, and their media types, would be useful.
>
> It strikes me that a if a web browser implements Speech, it will  
> need to support multiple presentations of the document at the same  
> time. I'd be interested to hear if there are any implementations of  
> Speech yet, given this level of complexity.
>
> Simon
Received on Friday, 4 February 2011 11:37:13 GMT

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