[PD] making a perceptual spectrum analyzer

[mescalinum at gmail.com]

how to make a perceptual spectrum analyzer?

the magnitude output of rfft~ seems to need some tweaking, like:
1) correcting amplitude of bins
2) spacing the bins from equally linearly spaced to equally logarithmic
spaced (for outputting a set of frequencies like: 62 125 250 500 1000
2000 4000 8000 16000)

does anyone already did it?
in part 2), apart I don't know how to do it, I'm not sure if I need to
sum up all the bins belonging to a frequency band, or to average them ...?


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