Fwd: [css3-speech] voice-balance and azimuth

Accidentally forgot to cc the list with this. 


Begin forwarded message:

> From: Andrew Thompson <lordpixel@mac.com>
> Date: July 11, 2011 7:53:40 AM EDT
> To: fantasai <fantasai.lists@inkedblade.net>
> Subject: Re: [css3-speech] voice-balance and azimuth
> 

> 
> On Jul 7, 2011, at 1:43 PM, fantasai wrote:
> 
>> The stereo system is a flattening of surround sound. In a stereo system, outputting
>> equal sound from all speakers is equivalent to outputting sound from the front-center.
>> However in a surround sound system, these are two different things. Which does the
>> 'center' keyword correspond to? And once you've decided that, what syntax would I use
>> in Level 4 to get the other behavior?
> 
> Why would you need to? What I mean is, Daniel seems to be thinking of centre as a logical property describing how the sound should be perceived by the user whereas you are trying to define exactly how this will be physically implemented on common speaker configurations.
> 
> Naturally defining how this maps makes interoperability easier to achieve so its a good thing, but in the particular example you mention, why would an author care if the center sound is achieved by having the audio predominate in the front-center speaker or by having equal sound from the front left and right speakers? Doesn't it sound the same? What's the use case where an author needs that control? 
> 
> AndyT (lordpixel - the cat who walks through walls)
> A little bigger on the inside
> 
>    (see you later space cowboy, you can't take the sky from me)
> 
>