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2004 Jun 02
4
Transient coding: AAC vs. Vorbis
...or curves (Vorbis II)
Obviously Vorbis I is wasting space in this example by
coding 5 floor curves (G-K) that are very similar.
AAC *shares* the scalefactor set B with these 5 windows
thus saving space.
Vorbis II could allow the storage of multiple 'short'
MDCT spectra (maximal blocksize1/blocksize0 many)
into one packet that share ONE floor curve.
It maybe also worth the effort to encode the channel's
residue vectors as one big vector (per channel) by
interleaving. I think this will also improve coding
efficiency a bit. As a side effect there will be the need
for moreresidue configuratio...