POV-Ray : Newsgroups : povray.off-topic : Filtering - don't bank on it... : Re: Filtering - don't bank on it... Server Time
10 Oct 2024 01:33:49 EDT (-0400)
  Re: Filtering - don't bank on it...  
From: Warp
Date: 6 Nov 2008 09:15:36
Message: <4912fc08@news.povray.org>
scott <sco### [at] scottcom> wrote:
> Of course there is, try it.  If you create a frequency that is half-way 
> between two frequencies in the DFT, your DFT histogram will still look the 
> same shape, the peak will just be shared between the two frequencies.

  The same shape as what?

  Basically you are saying that you can recreate a sine wave (which is one
single frequency) with the sum of two sine waves (the two frequencies in
the discrete frequency spectrum)? Not only that, but the two sine waves
in question are adjacent to each other in the discrete frequency spectrum?

  I would be interested in seeing some simple math about this.

-- 
                                                          - Warp


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