[PD] Why does cross synthesis with [expr~] sound much better than [poltocar~]?

Alexandre Torres Porres porres at gmail.com
Tue Jul 21 20:35:48 CEST 2015


if you're using pd extended 0.43, there's a bug that just ruins everything

2015-07-21 15:11 GMT-03:00 Reed Perkins <reedperkins32 at gmail.com>:

> Hello list,
>
> I am trying my hand at some basic FFT stuff. I am designing a cross
> synthesis patch (see attached) where the amplitude from one signal is
> combined with the phase of another signal and fed into [rifft~].
>
> The problem is that the polar to cartesian conversion using [poltocar~]
> sounds really bad. I worked out the trig formulas for what is going on, and
> found that using [expr~] to handle to polar to cartesian conversion sounds
> much better.
>
> Although I am happy with the [expr~] results, I am worried that I am not
> using [poltocar~] correctly, or understanding how to use it.The help files
> are very vague when it comes to the FFT objects in pd, so I was wondering
> if someone here could enlighten me as to what I'm doing wrong.
>
> Thanks and have an awesome day!
>
> -Reed
>
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