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很實用的時頻分析工具箱，包括短時傅里葉正反變換等，很好，很強大哦~~分享給大家，包括以下函數(shù)的源代碼：
% sigmerge - Add two signals with given energy ratio in dB.
%
% Choice of the Instantaneous Amplitude
% amexpo1s - Generate one-sided exponential amplitude modulation.
% amexpo2s - Generate bilateral exponential amplitude modulation.
% amgauss - Generate gaussian amplitude modulation.
% amrect - Generate rectangular amplitude modulation.
% amtriang - Generate triangular amplitude modulation.
%
% Choice of the Instantaneous Frequency
% fmconst - Signal with constant frequency modulation.
% fmhyp - Signal with hyperbolic frequency modulation.
% fmlin - Signal with linear frequency modulation.
% fmodany - Signal with arbitrary frequency modulation.
% fmpar - Signal with parabolic frequency modulation.
% fmpower - Signal with power-law frequency modulation.
% fmsin - Signal with sinusoidal frequency modulation.
% gdpower - Signal with a power-law group delay.
%
% Choice of Particular Signals
% altes - Altes signal in time domain.
% anaask - Amplitude Shift Keyed (ASK) signal.
% anabpsk - Binary Phase Shift Keyed (BPSK) signal.
% anafsk - Frequency Shift Keyed (FSK) signal.
% anapulse - Analytic projection of unit amplitude impulse signal.
% anaqpsk - Quaternary Phase Shift Keyed (QPSK) signal.
% anasing - Lipschitz singularity.
% anastep - Analytic projection of unit step signal.
% atoms - Linear combination of elementary Gaussian wave packets.
% dopnoise - Generate complex Doppler random signal.
% doppler - Generate complex Doppler signal.
% klauder - Klauder wavelet in time domain.
% mexhat - Mexican hat wavelet in time domain.
% tftb_window - Window generation (previously window.m).
%
% Addition of Noise
% noisecg - Analytic complex gaussian noise.
% noisecu - Analytic complex uniform noise.
%
% Modification
% scale - Scale signal using Mellin transform.
%
%
% Processing Files
%
% Time-Domain Process
代碼片段和文件信息
%??This?program?is?free?software;?you?can?redistribute?it?and/or?modify
%??it?under?the?terms?of?the?GNU?General?Public?License?as?published?by
%??the?Free?Software?Foundation;?either?version?2?of?the?License?or
%??（at?your?option）?any?later?version.
%
%??This?program?is?distributed?in?the?hope?that?it?will?be?useful
%??but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
%??MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
%??GNU?General?Public?License?for?more?details.
%
%??You?should?have?received?a?copy?of?the?GNU?General?Public?License
%??along?with?this?program;?if?not?write?to?the?Free?Software
%??Foundation?Inc.?51?Franklin?St?Fifth?Floor?Boston?MA??02110-1301??USA
%TFDEMO Demonstrate?some?of?Time-Frequency?Toolbox‘s?capabilities.
% TFDEMO?by?itself?presents?a?menu?of?demos.
% O.Lemoine?-?May?1996.
% Copyright?（c）?CNRS.
clg;?clear;?clc;
TFTBcontinue=1;
while?TFTBcontinue==1
?choice?=?menu（‘Time-Frequency?Toolbox?Demonstrations‘...
????‘Introduction‘...
????‘Non?stationary?signals‘?...
????‘Linear?time-frequency?representations‘?...
????‘Cohen‘‘s?class?time-frequency?distributions‘?...
????‘Affine?class?time-frequency?distributions‘?...
????‘Reassigned?time-frequency?distributions‘?...
????‘Post-processing?‘...
????‘Close‘）;
?
?if?choice==1
??tfdemo1;
?elseif?choice==2
??tfdemo2;
?elseif?choice==3
??tfdemo3;
?elseif?choice==4
??tfdemo4;
?elseif?choice==5
??tfdemo5;
?elseif?choice==6
??tfdemo6;
?elseif?choice==7
??tfdemo7;
?elseif?choice==8
??TFTBcontinue=0;?
?end
end
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2012-03-11?11:04??tftb-0.1\
?????文件??????????64??2005-10-15?23:26??tftb-0.1\AUTHORS
?????文件???????18011??2005-10-13?23:03??tftb-0.1\COPYING
?????目錄???????????0??2005-10-15?23:34??tftb-0.1\data\
?????文件???????16568??2005-10-13?23:06??tftb-0.1\data\bat.mat
?????文件??????348866??2005-10-13?23:06??tftb-0.1\data\gabor.mat
?????文件???????34816??2005-10-13?23:06??tftb-0.1\data\movcw4at.mat
?????目錄???????????0??2005-10-15?23:34??tftb-0.1\demos\
?????文件????????1552??2005-10-13?23:13??tftb-0.1\demos\tfdemo.m
?????文件????????5988??2005-10-13?23:13??tftb-0.1\demos\tfdemo1.m
?????文件???????10051??2005-10-13?23:13??tftb-0.1\demos\tfdemo2.m
?????文件???????10367??2005-10-13?23:13??tftb-0.1\demos\tfdemo3.m
?????文件???????14603??2005-10-13?23:13??tftb-0.1\demos\tfdemo4.m
?????文件???????10543??2005-10-13?23:13??tftb-0.1\demos\tfdemo5.m
?????文件????????6563??2005-10-13?23:13??tftb-0.1\demos\tfdemo6.m
?????文件????????7780??2005-10-13?23:13??tftb-0.1\demos\tfdemo7.m
?????文件????????1031??2005-10-15?23:26??tftb-0.1\INSTALL
?????目錄???????????0??2012-03-11?14:27??tftb-0.1\mfiles\
?????文件????????2409??2005-10-13?23:14??tftb-0.1\mfiles\altes.m
?????文件????????2884??2005-10-13?23:14??tftb-0.1\mfiles\ambifunb.m
?????文件????????5455??2005-10-13?23:14??tftb-0.1\mfiles\ambifuwb.m
?????文件????????1620??2005-10-13?23:14??tftb-0.1\mfiles\amexpo1s.m
?????文件????????1628??2005-10-13?23:14??tftb-0.1\mfiles\amexpo2s.m
?????文件????????1654??2005-10-13?23:14??tftb-0.1\mfiles\amgauss.m
?????文件????????1601??2005-10-13?23:14??tftb-0.1\mfiles\amrect.m
?????文件????????1634??2005-10-13?23:14??tftb-0.1\mfiles\amtriang.m
?????文件????????1971??2005-10-13?23:14??tftb-0.1\mfiles\anaask.m
?????文件????????2060??2005-10-13?23:14??tftb-0.1\mfiles\anabpsk.m
?????文件????????2100??2005-10-13?23:14??tftb-0.1\mfiles\anafsk.m
?????文件????????1397??2005-10-13?23:14??tftb-0.1\mfiles\anapulse.m
?????文件????????2217??2005-10-13?23:14??tftb-0.1\mfiles\anaqpsk.m
............此處省略260個文件信息
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