TFD-chirple1
所属分类：matlab编程
开发工具：matlab
文件大小：191KB
下载次数：100
上传日期：2008-10-16 09:38:24
上 传 者：
pkshot
说明： 时频分布，并附有常用时频分析信号。附带演示程序。
(Time-frequency distribution, with common time-frequency analysis of signals. Incidental demo.)
文件列表:
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Changes (2522, 1999-07-08)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\angle2cr.m (372, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\best_chirplet.m (2879, 1999-07-08)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\cr2angle.m (388, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\crlb.m (526, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\est_c.m (1594, 1999-05-07)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\est_cd_global.m (1624, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\est_d.m (1494, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\est_tf.m (1566, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\find_chirplets.m (2823, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\fisher.m (1312, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\f_chirp.m (402, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\g_chirp.m (916, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\hessian.m (2749, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets\KandQ.m (7959, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Chirplets (0, 2008-10-16)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Contents.m (3847, 1999-07-08)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Copyright (987, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Demos\demo_chirplets.m (2490, 1999-07-08)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Demos\demo_cohen.m (4711, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Demos\demo_localized.m (2804, 1999-04-20)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Demos\demo_ltvf.m (1262, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Demos\demo_tcd.m (2832, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Demos\demo_wigner4.m (3831, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Demos (0, 2008-10-16)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\DTFDPath.m (961, 1999-07-08)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\GNU_GPL (15145, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Makefile (357, 1999-07-08)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Quartic\laf.m (944, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Quartic\localized.m (1799, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Quartic\lwigner.m (1473, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Quartic\tcd.m (1715, 1999-02-02)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Quartic (0, 2008-10-16)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Symplectic\chirp2rot.m (605, 1999-04-27)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Symplectic\fracft.m (1743, 1999-05-18)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Symplectic\freq_shear.m (613, 1999-04-28)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Symplectic\scale.m (2592, 1999-04-28)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Symplectic\time_shear.m (1323, 1999-04-28)
TFD-chirplet\DiscreteTFDs\DiscreteTFDs\Symplectic (0, 2008-10-16)
... ...
DiscreteTFDs
Copyright (c) 1997, 19***, 1999 Jeffrey C. O'Neill (jeffo@bu.edu)
Copyright (c) 19***, 1999 Boston University
Copyright (c) 1997, 19*** L'Ecole Normale Superieure de Lyon
Copyright (c) 1997 The Regents of the University of Michigan
All Rights Reserved
see DiscreteTFDs/Copyright
This is a collection of Matlab files for time-frequency
analysis. However, if you don't have Matlab, you can try Octave
http://www.che.wisc.edu/octave/
or SciLab
http://www-rocq.inria.fr/scilab/
These programs are either a result of my research or something that I
found useful enough to spend the time to implement. Included are: a
rigorous implementation of time-frequency distributions (Cohen class),
some quartic time-frequency distributions, chirplet decomposition based
on maximum likelihood estimation, fractional Fourier transform,
time-varying filtering, and other useful little utilities. There
isn't a manual, but you can find details in my papers
http://mdsp.bu.edu/jeffo
or you can send me an email
jeffo@bu.edu
The files are located in several sub-directories:
Chirplets -- atomic decomposition based on maximum likelihood estimation
Demos -- demonstrations to get you started
Symplectic -- symplectic transformations (fractional Fourier transform)
TypeI -- routines for computing type I TFDs (the Cohen class)
TypeII -- routines for computing type II TFDs
TypeIV -- routines for computing type IV TFDs
Quartic -- some quartic functions from my research
Utils -- some useful utilities
You will need to add something like the follwing lines to your
startup.m file (do not put a trailing '/' at the end of p!):
p = '/home/jeffo/matlab/DiscreteTFDs';
path(path, p)
DTFDPath(p)
clear p
If you are using a Macintosh or MS Windows, then you will need to edit
DTFDPath.m to reflect your system path conventions.
At the MATLAB prompt type "help DiscreteTFDs" for a list of available
functions, and use "help" to get information on each function.
For someone who knows very little about the area of TFDs and wants to
experiment, I would recommend using binomial2, born_jordan2, and
spec2 with window lengths ranging from 16 to 128.
Jeff O'Neill
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