tqwt_matlab_toolbox
所属分类：matlab编程
开发工具：matlab
文件大小：4998KB
下载次数：220
上传日期：2014-09-26 11:50:34
上 传 者：
soody
说明： 可调Q因子小波变换，用在故障诊断中，程序中包含了原始TQWT工具箱和轴承振动信号信号的谱包络的求取等，最新的应用成果
(Adjustable Q-factor wavelet transform used in fault diagnosis, the program includes a spectral envelope of the original TQWT toolbox and bearing vibration signal signal to strike, etc., the latest application of the results)
文件列表:
tqwt_matlab_toolbox\.DS_Store (21508, 2011-02-23)
tqwt_matlab_toolbox\afb.m (1355, 2011-01-05)
tqwt_matlab_toolbox\ComputeWavelets.m (1775, 2011-02-18)
tqwt_matlab_toolbox\demo1.m (1391, 2011-01-12)
tqwt_matlab_toolbox\demo1_radix2.m (1419, 2011-02-16)
tqwt_matlab_toolbox\itqwt.m (497, 2011-01-04)
tqwt_matlab_toolbox\itqwt_radix2.m (790, 2011-01-04)
tqwt_matlab_toolbox\lps.m (868, 2011-01-05)
tqwt_matlab_toolbox\next.m (137, 2011-01-05)
tqwt_matlab_toolbox\PlotEnergy.m (1372, 2011-02-23)
tqwt_matlab_toolbox\PlotFreqResps.m (947, 2011-02-13)
tqwt_matlab_toolbox\PlotSubbands.m (2899, 2011-02-18)
tqwt_matlab_toolbox\PlotWavelets.m (1603, 2011-02-16)
tqwt_matlab_toolbox\resonance_demo.m (8209, 2014-04-20)
tqwt_matlab_toolbox\resonance_demo_eq.m (7969, 2011-02-18)
tqwt_matlab_toolbox\sfb.m (1633, 2011-01-13)
tqwt_matlab_toolbox\sparsity_demo.m (6666, 2014-04-08)
tqwt_matlab_toolbox\test_PR.m (1159, 2011-01-05)
tqwt_matlab_toolbox\test_PR_radix2.m (1603, 2011-01-05)
tqwt_matlab_toolbox\test_signal.m (1898, 2011-02-19)
tqwt_matlab_toolbox\tqwt.m (1488, 2011-01-13)
tqwt_matlab_toolbox\tqwt_fc.m (243, 2011-02-23)
tqwt_matlab_toolbox\TQWT_guide.pdf (627882, 2011-04-09)
tqwt_matlab_toolbox\tqwt_mca.m (4562, 2014-03-21)
tqwt_matlab_toolbox\tqwt_mca_eq.m (3443, 2011-02-13)
tqwt_matlab_toolbox\tqwt_radix2.m (1740, 2014-04-08)
tqwt_matlab_toolbox\tqwt_sparsify.m (2513, 2011-02-13)
tqwt_matlab_toolbox\tqwt_sparsify_bp.m (2507, 2011-02-13)
tqwt_matlab_toolbox\uDFT.m (86, 2011-01-05)
tqwt_matlab_toolbox\uDFTinv.m (104, 2011-01-05)
tqwt_matlab_toolbox\signals\sp1.wav (130420, 2001-01-16)
tqwt_matlab_toolbox\html\.DS_Store (6148, 2011-01-04)
tqwt_matlab_toolbox\html\demo1.html (5998, 2011-01-04)
tqwt_matlab_toolbox\html\demo1_01.png (6495, 2011-01-04)
tqwt_matlab_toolbox\html\demo1_02.png (5617, 2011-01-04)
tqwt_matlab_toolbox\html\demo1_radix2.html (6098, 2011-01-04)
tqwt_matlab_toolbox\html\demo1_radix2_01.png (6228, 2011-01-04)
tqwt_matlab_toolbox\html\demo1_radix2_02.png (5617, 2011-01-04)
tqwt_matlab_toolbox\html\sparsity_demo1.html (18852, 2011-01-04)
... ...
Tunable Q-Factor Wavelet Transform (TQWT)
Version 1.3
This is a MATLAB implementation of the tunable Q-factor wavelet transform (TQWT) described in the paper. An implementation in C, which runs faster than the MATLAB code, is available by request.
See the guide: TQWT_guide.pdf for more information.
For questions/comments/etc contact selesi@poly.edu
Reference:
Wavelet Transform with Tunable Q-Factor
http://taco.poly.edu/selesi/TQWT/
Ivan Selesnick
selesi@poly.edu
Polytechnic Institute of New York University
Brooklyn, NY 11201, USA
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List of functions:
tqwt_radix2.m Main function for the radix-2 TQWT.
itqwt_radix2.m Inverse radix-2 TQWT.
These functions use radix-2 FFTs only.
tqwt.m TQWT (First form of TQWT described in the paper.)
itqwt.m Inverse TQWT
These functions are slower than tqwt_radix2.
They are provided to complement the paper.
The radix-2 versions are preferred for practical use.
demo1.m Illustrates the use of functions.
demo1_radix2.m
test_PR_radix2.m Verify perfect reconstruction properties.
test_PR.m
sparsity_demo.m Reproduces Example 2 in the TQWT paper.
resonance_demo.m Demonstration of resonance decomposition
tqwt_sparsify_bp.m Finds sparse representation (basis pursuit)
tqwt_sparsify.m Finds sparse approximation (basis pursuit denoising)
tqwt_mca Resonance decomposition
tqwt_mca_eq Resonance decomposition with equality constraint
PlotFreqResps.m Plot frequency responses of the TQWT.
PlotSubbands.m Plot subbands computed using TQWT.
PlotEnergy Plot distribution of signal energy over subbands.
PlotWavelets.m Plot wavelets associated with TQWT.
ComputeWavelets.m Computes wavelets associated with TQWT.
afb.m Analysis filter bank (called by tqwt and tqwt_radix2).
sfb.m Synthesis filter bank (called by itqwt and itqwt_radix2).
lps.m Low-pass scaling
next.m Next power of two
uDFT.m unitary DFT (normalized DFT)
uDFTinv.m unitary inverse DFT (normalized inverse DFT)
frequency_response_functions
Folder containing functions called by Plot_FreqResps.
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Versions
version 1.3 February 23, 2011
version 1.2 February 22, 2011
version 1.0 January 6, 2011
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