原创短时傅立叶变换matlab分析-短时傅立叶变换matlab仿真程序.txt

clear all;
clc;

%------------------>Basic Parameters<-----------------
f1 = 500;
f2 = 1000;
fN = 8000;
n = 10000;
t = 0:1/fN:(n-1)/fN;

%------------------>Generate signals<-----------------
sig1 = sin(2*pi*500*t);
sig2 = sin(2*pi*1000*t)/2;
puls = zeros(size(t));
puls(2100) = 10;
puls(2132) = 10;
x = sig1+sig2+puls;

%------------------>window width<-----------------
win1 = 12.8*fN/1000;   %12.8ms  102.4 points
win2 = 6.4*fN/1000;    %6.4ms   51.2 points
win3 = 3.2*fN/1000;    %3.2ms   25.6 points

%------------------>stepping length<-----------------
stepping1 = 16;    
stepping2 = 32;
stepping3 = 64;
%------------------>nfft points<-----------------

nfft = min(256,length(x));