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SpectralDeviationStopBand

MuBu
#1

In the attributes this is called: “threshold for perceptual spectral *rolloff* in percent of spectrum”.
The name says something different: it is a stop band for the spectral deviation.
Also the unit does not seem to be a percentage of the spectrum.

The same goes for HarmonicSpectralDeviationStopBand.
See also pipo.catalog.

What does this actually do?
The Peeters paper (2004) does not really substitute for some real documentation.

#2

it needs to be taken literally: the spectral deviation is calculated over that many bands / harmonics. I’ll correct the help, thanks!

#3

It’s also in the ‘object action menu’ (the yellow button at the left of the object) in attributes.

So, if I understand correctly: if I enter the number 10, it will calculate the standard deviation based on the mean amplitudes of 10 harmonics?