***SPAM*** Re: Re: [Vorbis] several questions

[fangchao]

Hi!

Now I am quite confused. Can you please explain it in a detail?
In your opinion, what the psychoacustic model really do?
And why we get the floor curve that way?
Thanks!
Best regards!

>No; vorbis does not track allowable noise (this strategy was used by
>original mp3, but was a big red herring).  The floor is intended to
>represent desired unit-scale in a band, in essence, the desired amount
>of resolution.  During encode, the spectrum is quantized according to
>the floor and then normalized in an effort to preserve tone and noise
>energy over any given critical band.
 
				 
　　　　　　　　lisa
　　　　　　　　fangchao_dlut at sina.com
　　　　　　　　　　2005-09-28