SV: [vorbis-dev] Re: SBR

[Pontus Carlsson]

Because SBR uses a totally different technology that is independent of the
underlying codec.. It has nothing to do with mp3. It has been tested with
for example AAC, boosting it about 30%.. And that together with Dolbys or
Fhg's implementation of AAC surely beats Ogg. So however good a codec is,
SBR could make it better.. Mostly for lower bitrates though (<90kbit/s or
so) as the technology is about "guessing" the higher frequencies using the
correlation between lower and higher spectral bands.

/Pontus

-----Ursprungligt meddelande-----
Från: owner-vorbis-dev at xiph.org [mailto:owner-vorbis-dev at xiph.org]För
Benjamin Lebsanft
Skickat: den 13 oktober 2002 10:34
Till: vorbis-dev at xiph.org
Ämne: [vorbis-dev] Re: SBR

<p>why would we need SBR when vorbis already performs as good as mp3pro at very
low bitrates and better at higher bitrates ?
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