Looking at the ISO docs annex 3-D.2 Psychoacoustic Model II:
4. Calculate the unpredictability measure cw
...
By sacrificing performance, this measure can be calculated
on only a lower portion of the frequency lines.
Calculations should be done from DC to at least 3kHz and
preferably to 7kHz. An upper limit of less than 5.5kHz may
considerably reduce performance from that obtained during
the subjective testing of the audio algorithm.
...
Best results will be obtained by calculating cw up to 20kHz.
does this mean, we can improve GPSYCHO by calculating cw up to 20 kHz?
Now we do it up to 8.9 kHz I think, and how much performance will we loose
doing so?
Robert
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