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c fft.c

#include #include #include #define PI 3.14159265358979323846 struct COMPLEX { float re; float im; } cplx , * Hfield , * S , * R , * w;
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c fft.c

/* * * FFT.c * * Based on FFT.cpp from Audacity, which contained the following text: * * This file contains a few FFT routines, including a real-FFT * routine that is almost twice as fa
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c fft.c

#include #include #include #define PI 3.14159265358979323846 struct COMPLEX { float re; float im; } cplx , * Hfield , * S , * R , * w;
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obj fft.obj

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sbr fft.sbr

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cpp fft.cpp

#include #include #include #include #include #include #include "sound.h" #include "fft.moc" #include extern "C" { #in
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h fft.h

#ifndef FFT_H #define FFT_H #include #include /* ------------------------------------------------------------------------ */ class FFTWindow : public QWidget { Q_OBJECT
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c fft.c

#include #include #include #include #include #include #include #include #include
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c fft.c

#include #include #include #include #define REAL(z,i) ((z)[2*(i)]) #define IMAG(z,i) ((z)[2*(i)+1]) int main (void) { int i; double dat
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texi fft.texi

@cindex FFT @cindex Fast Fourier Transforms, see FFT @cindex Fourier Transforms, see FFT @cindex Discrete Fourier Transforms, see FFT @cindex DFTs, see FFT This chapter describes functions for perfor