代码搜索：FFt 有哪些应用？
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obj fft.obj
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paf fft.paf
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asm fft.asm
*********************************************************************************
* (C) COPYRIGHT TEXAS INSTRUMENTS, INC. 1996 *
**********************************
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out fft.out
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mak fft.mak
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cpp fft.cpp
#include
#include
#define PI 3.141592653
int n;
void ComplexMult(float*x,int num)
{
float temp=*(x);
*(x)=(*(x))*cos(-2*PI*num/n)-(*(x+1))*sin(-2*PI*num/n);
*(x+1)=cos(-
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txt fft.txt
Matlab中FFT有1D和2D的，FFT得到的是信号的频谱即t－》f
如
clear
%编写骆遥
fs=1000
t=0:1/fs:0.6;
f1=100;
f2=300;
x=sin(2*pi*f1*t)+sin(2*pi*f2*t);
subplot(711)
plot(x);
title('f1（100Hz）\f2(300Hz)的正弦信号，初相0
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c fft.c
C28x 快速傅立叶变换程序库
C28x 快速傅立叶变换程序库PCWIN95/98/2000/ME/NT/XPv0.9b08/17/2004
;*************************************************************************************
;***********
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h fft.h
/* Constant Definitions */
#define FFT_BLOCK_LENGTH 256 /* = Number of frequency points in the FFT */
#define LOG2_BLOCK_LENGTH 8 /* = Number of "Butterfly" Stages in FFT processing */
#define
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mak fft.mak
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