> > > These tables (ISO Psychoacoustic Model) are built by taking values
from
> > > optimized encoders used in MPEG listening tests.
>
> Perhaps the one in AAC demo code is optimized, but if the one of Layer II
is
> the same as the Layer III demo code, then it's quite bad.
>
No luck - these are also took from the highest masking case - and not
suitable for transparent perceptual coding (VBR and CBR >112 kbps)...
> In Lame it was first replaced by the so-called "Painter & Spanias"
formula,
> wich is a great improvement.
Slightly off-topic, but I've found newer version of the Painter's paper,
including newer codecs (AC-3, AAC, HILN, etc..)
http://www.eas.asu.edu/~spanias/audiopaper1.pdf
Regards,
-- Ivan
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