[vorbis-dev] Large codebook?

[Juhana Sadeharju]

Hello.

Earlier I asked if it would be possible to use one common large
codebook for all audiofiles. Can you estimate how the following
system would work?

1. The audio would be divided to 16 samples blocks.
2. For each block, the first sample would be stored without any encoding.
3. Linear interpolations between the stored samples are computed.
4. The residues (length of 16 samples) between the original audio and
the linear interpolation are computed. Residues would go from 0.0 to 0.0.
5. The residues are vector quantized.

For each 16 samples, one sample and one codebook reference would be stored.
With 16-bit audio it would mean 1:4 compression ratio.

Comments?

Juhana

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