>
> > The tonality is used for the spreading function. The more noiselike
> > a signal, the more masking it generates.
>
> Isn't it the other way around? More tonal -> more masking?
>
> Ciao,
>
> Segher
>
If you believe the psymodels in the ISO docs, it appears
that more noise like -> more masking.
In the ISO formulas (both mp3 and aac), a pure noise signal
will have a spreading function 23db stronger than a pure
tonal signal. (for AAC, it is 12db stronger)
Mark
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