[Vorbis] Sample rates higher than 48k? 24-bit depth?

[Monty]

> You can try to encode a 24bits track and its 16bits dowmsapled
> version. From the difference of their file sizes you can
> roughly evaluate how much information does vorbis keep from
> a 24bits source.

Research done by MPEG found that although the ear has ~120dB of
dynamic range, signal depth within a critical band is only about 6
bits deep. 

Monty