- From: Daniel Weck <daniel.weck@gmail.com>
- Date: Wed, 13 Jul 2011 21:02:41 +0100
- To: www style <www-style@w3.org>, fantasai <fantasai.lists@inkedblade.net>
On 13 Jul 2011, at 20:28, fantasai wrote: >> I would expect a speech engine to support a specific range of admissible >> frequencies, and to gracefully handle "awkward" values such as 0Hz. > > You should specify this explicitly -- that there may be UA-specific limits > on the frequency and that UAs must clamp out-of-range actual (as opposed to > used or computed) values to this range. What about this? " Speech-capable user agents are likely to support a specific range of values rather than the full range of possible computed numerical values for frequencies. The actual values in user agents may therefore be clamped to implementation-dependent minimum and maximum boundaries. For example: although the 0Hz frequency can be legitimately computed, it may be clamped to a more meaningful value in the context of the speech synthesizer. " and for computed values: " Computed absolute frequency values that are negative are clamped to zero Hertz. " Author-provided values are handled slightly differently: " When a negative value is provided, it is clamped to zero. " http://dev.w3.org/csswg/css3-speech/#voice-pitch
Received on Wednesday, 13 July 2011 20:03:20 UTC