[PD] making a perceptual spectrum analyzer

[Loic Kessous]

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, mescalinum at 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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