[vorbis] bitrate peeling

[Myles Buckley]

>I'd hate to act lame or something, but what exactly is bitrate peeling?

Bitrate peeling is taking an existing high bitrate stream and "peeling" away
the higher resolution data to result in a lower bitrate stream WITHOUT
re-encoding.

imagine this (very simplified):
Nhe OGG audio stream can be imagined as BASEinfo + lowq + mediumq + highq,
where the q's are the resolution data.

now, take away the highq and you have a smaller stream of (BASEinfo + lowq +
mediumq)

Myles
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