%?Main?Function

clear;
clc;

%?the?initial?signal
%?f（t）?=?sin（2*pi*t）
R?=?0.05;?t?=?1:R:10;
f?=?sin（2*pi*t.*t）;
subplot（221）;?plot（tf）;
xlabel（‘t‘）;?ylabel（‘f‘）;
title（‘the?initial?signal‘）;

%?the?frequency?distribution（fourier?transform）
F?=?fft（f）;
F1?=?abs（F）;
subplot（222）;?plot（tF1）;
xlabel（‘w‘）;?ylabel（‘|F|‘）;
title（‘the?frequency?of?the?signal‘）;

%?STFT?with?the?rectangle?window
[f1F1]?=?STFT1（ft）;

%?STFT?with?the?Gaussian?window
%[f1F1]?=?STFT2（ft）;

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????499??2010-10-06?11:02??main.m

?????文件????????806??2010-10-06?11:10??STFT1.m

?????文件????????868??2010-10-06?11:28??STFT2.m

-----------?---------??----------?-----??----

?????????????????2173????????????????????3