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[css3-speech] pitch alteration expressed in semitones and Hertz

From: Daniel Weck <daniel.weck@gmail.com>
Date: Wed, 19 Jan 2011 18:12:25 +0000
Message-Id: <F4A3E251-60C1-4415-84DA-DF90E4034D11@gmail.com>
To: www-style@w3.org
Dear all,

The latest editor's draft of the CSS3 Speech Module [1] now includes  
support for pitch alteration ('voice-pitch' and 'voice-pitch-range')  
based on relative changes (decrement or increment) expressed with  
semitones and Hertz values. This addition provides better  
compatibility with SSML 1.0 [2], and enables more sophisticated  
authoring scenarios. The impact in terms of implementation costs is  
relatively low (simple new parsing rules, and basic arithmetics to  
compute pitch frequencies).

Comments welcome.
Regards, Daniel


Received on Wednesday, 19 January 2011 18:12:56 UTC

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