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  1. #1
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    Fourier Transform (2000)

    This might be a bit off-topic but I'm looking for external libraries/DLL (or even VBA code) that will perform a DFT (Discrete Fourier Transform).
    I know that the DataAnalysis pack has a Fourier transform but that's a so-called Fast Fourier Transform (FFT) which has one major disadvantage: it can only act on data-sets with sizes equal to a power of two (e.g. 64, 128, 256 etc.).

    Anyone?

    Thanks <img src=/S/cool.gif border=0 alt=cool width=15 height=15>,

    Erik Jan

  2. #2
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    Re: Fourier Transform (2000)

    As a non-mathematician, I cannot possible judge the quality, but perhaps this is interesting <A target="_blank" HREF=http://www.math.ntu.edu.tw/~scc/fft/dft.htm>http://www.math.ntu.edu.tw/~scc/fft/dft.htm</A> .

    Ingrid

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