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andy_eeFlag for United States of America

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Fast Fourier Transform (FFT) in C#

Is there a good open source library of source code listing that will perform FFT, preferably in C#.  I am being given an input waveform as an array of float values and would be calculating the functions based upon that input.  Any assistance would be greatly appreciated.

Thanks.
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d-glitch
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Here is a link to an earlier question:

     https://www.experts-exchange.com/questions/21098939/what-are-butterfly's-in-DSP.html

Here is a C language implementation of the Cooley-Tookey FFT algorithm with the butterflies calculations:

     http://www.science.uva.nl/pub/computer-systems/ias/groen/aim/aim/fft1.c
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Jose Parrot
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