[PD] windowing extended objetcs, mistakes on help files and how to make them into vanilla patches

Alexandre Torres Porres porres at gmail.com
Tue Oct 16 23:03:21 CEST 2012


seem to have nailed the gaussian window, but with different width values
than the object.

2012/10/16 Alexandre Torres Porres <porres at gmail.com>

> Hi there, I was studying the window functions for FFT, so I was trying to
> build into vanilla pacthes the window functions that come on Pd-Extended
> [windowing] package. I got to do them all, but kaiser~ and gaussian~
>
> Do any of you feel capable to perform this ver nerdy taks?
>
> Well, anyway, here are some inconsistencies/mistakes I found ont the
> description of the formulas that are present in the help of those external
> objetcts:
>
> - blackman~ instead of 0.8 it should be 0.08
>
> - welch formula: 1-abs(x) - not sure, but doesn't seem to be right or
> clear. I used this one: http://paulbourke.net/miscellaneous/windows/
>
> - barlett~: 1-x^2 doesn't seem to be right or clear either, I used this
> one: http://mathworld.wolfram.com/ApodizationFunction.html
>
> - connes~: cos(pi*x/2) - it's the same as cosine~ so it can't be right, I
> used the above link again.
>
> Cheers
> Alex
>
>
>
>
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