POV-Ray : Newsgroups : povray.binaries.images : Guess what .... : Re: Guess what .... Server Time
20 Apr 2024 09:51:09 EDT (-0400)
  Re: Guess what ....  
From: ingo
Date: 1 Jul 2022 04:50:54
Message: <XnsAEC76E59212C3seed7@news.povray.org>
in news:web.62beacd6f6159f18acf8b7ce89db30a9@news.povray.org Tor Olav 
Kristensen wrote:

> What will you use it for ?
> 

The reason to get a go at it is speeding up audio synthesis: 
https://ingoogni.nl/povray/sounds-of-povray/povray-ans/

Also for audio synthesis, faster convolution(filters). A long way to go 
still.

Once 1D is running 2D is just doing it once for rows and then columns over 
te result. Again convolution comes to mind. I remember you doing that with 
functions? Here also the basics work, Input FFT -> IFFT results in an 
output == input.

What I'm using is the Stockham algorithm as shown at 
http://wwwa.pikara.ne.jp/okojisan/otfft-en/stockham2.html

As some complex number stuff is needed I also made a complex.inc. I used 
2d vectors for the numbers <real, im>.

I uploded the inc's to bin.scenefiles 

<web.62beb5288957c93017bac71e8ffb8ce3@news.povray.org>

Ingo

-- 
https://ingoogni.nl


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