have a look if you can find some constant Q filter analyser or bar
filters, it can be a good starting point.
hope that helps
loic
On 11 oct. 09, at 21:26, mescali...@gmail.com wrote:
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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