Ivan Dimkovic wrote:
>
> These tables (ISO Psychoacoustic Model) are built by taking values from
> optimized encoders used in MPEG listening tests.

Optimised ? Errr, really ? From what I've been testing, the absolute
thresholds seem to be incredibly poor performers here..
In my escapades with wavelet compression at the moment, I seem to require
quite substantial boosts of the resulting SNR to attain what can be called
quality results.. Routinely I'm adding another 12dB over the returned SNR of
the ISO PA Layer-2 model.
I just wanted to try some ATH experiments before deciding whether or not to
call it a day with the ISO Models, and start on something better from
scratch..
I think the later, though it's all top fun anyway :)

> I think the table is in energy domain (i.e. energy = pow(10.0,
> DecibelValue/10.0))

Ah, many thanks, I get it now :) Any pointers to the best places to start
reading on the subject of the current state of play with PA models ?

many thanks..
andy


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