[vorbis-dev] Psychoacoustic model
js at sandvall.nu
Thu Feb 5 01:33:05 PST 2004
We've implemented a vorbis decoder based on Tremor and as part of the
documentation we're also writing about psycho acoustic models and
We're quite up to date with the decoding process and psycho acoustics
in general but unfortunately not on the psycho acoustic encoding used
We have a few questions that would we would be very thankful to have
Which tricks are used?
Critical bands model?
Noise masking noise?
Tone masking noise?
Noise masking tone?
Other aspects of decoding:
Are the codebooks fixed for VQ encoding and huffman for a given
quality?. Adjustments of VQ codebooks based on the audio or picking
a fixed codebook that minimizes the quantization error?
Regards Johannes Sandvall, Erik Montnemery
--- >8 ----
List archives: http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'vorbis-dev-request at xiph.org'
containing only the word 'unsubscribe' in the body. No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.
More information about the Vorbis-dev