代码搜索：如何学习 FFt？
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www.eeworm.com/read/388457/8608008
m p3_9.m
% Program P3_9
% Circular Convolution Property of DFT
g1 = [1 2 3 4 5 6]; g2 = [1 -2 3 3 -2 1];
ycir = circonv(g1,g2);
disp('Result of circular convolution = ');disp(ycir)
G1 = fft(g1); G2 = fft(
www.eeworm.com/read/388135/8633146
m mel.m
function [x,mn,mx]=mel(p,n,fs,fl,fh,w)
%MELBANKM determine matrix for a mel-spaced filterbank [X,MN,MX]=(P,N,FS,FL,FH,W)
%
% Inputs: p number of filters in filterbank
% n length of fft
% fs
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m p3_9.m
% Program P3_9
% Circular Convolution Property of DFT
g1 = [1 2 3 4 5 6]; g2 = [1 -2 3 3 -2 1];
ycir = circonv(g1,g2);
disp('Result of circular convolution = ');disp(ycir)
G1 = fft(g1); G2 = fft(
www.eeworm.com/read/387489/8673864
txt correl.txt
Procedure CORREL(DATA1,DATA2:array of real;N:integer;var ANS:array of real);
var
FFT:array[0..128] of real;
NO2,I:integer; DUM,DUM1,DUM2:real;
begin
TWOFFT(DATA1, DATA2, FFT, ANS, N)
www.eeworm.com/read/431312/8689088
m exa090300_2.m
%-----------------------------------------------------------------------------
% exa090300_2.m, for fig. 9.3.2,
%-----------------------------------------------------------------------------
clea
www.eeworm.com/read/287298/8695787
m pipei.m
function y=pipei(x)
%构造发送信号波形
t1=0:100;
s01=-2+0*t1;s11=2+0*t1;
t2=100:200;
s02=2+0*t2;s12=-2+0*t2;
t3=200:1:400;
s03=0*t3;s13=0*t3;
t=[t1,t2,t3];
s0=[s01,s02,s03];
s1=[s11,s12,s13];
%匹配滤波器
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m dembisp.m
%D_BISP HOSA Demo: Estimating the Bispectrum (Direct & Indirect methods)
% and Bicoherence (auto and cross)
% demos of bispecd, bispeci, bicoher, bispecdx, bicoherx
%
echo of
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c sh506.c
#include
#include
#include
#include
#define uint unsigned int
#define uchar unsigned char
uint x0,x1,x2,x3,x4,x5,x6;
int L,i,j,k,b,p;
uchar w[3];
uint
www.eeworm.com/read/429955/8781096
m ch4_1_4.m
F = fft2(f,256,256);
imshow(F2,[-1 5],'notruesize');
colormap(jet); colorbar
www.eeworm.com/read/429467/8807215
asm c2cx0064.asm
.file "c2cx0064.asm"
.title "0064 point DIT Radix-2, Complex FFT"
.width 120
N .set 64 ; NUMBER OF POINTS FOR FFT
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