adaptive time frequency analysis

A time frequency analysis programm and a matlab UI

Description

An adaptive time frequency analysis toolkit , and its manual in Chinese. The kernel programm is writed in c++, and the GUI is a matlab function. Its time frequency resolution is much higher than short-term Fourier Transform.
    Usage : Extract tfagui.m and tfagui.fig into the exist path of matlab, then extract atfr.exe into a system path("C:\winnt" for example). You can launch the toolkit by inputting "tfagui" in the command line of matlab.

Reference:
  The kernel algorithm of AOK is from Jones at RICE University:
http://www-dsp.rice.edu/software/time-frequency-analysis

• MATLAB release: MATLAB 6.5 (R13)
• Other requirements: platform : windows NT,2000,xp matlab R13

[Bob Stein]

High resolution

[WANG tulip]

it is very easy to use,but the signal analysis must be based on physics.

[Vishnuvenkatesh Dhage]

 

[Chris Cordova]

very nice, and provides excellent time resolution of frequencies compared to fft.

[el korso nabil]

I'm working in the estimation of the instantaneous frequency. Can you please help me or give me the algorithm or the M-files to generate the estimation of the IF? Like ( Zeros-Crossings,LMS,RLS,WVD Peak, STFT peak,XWVD peak?or others)

Really thanks

[Tim S.]

For instantaneous frequency, consider looking into the Hilbert Transform.

[Dave Campbell]

This is a very nice version of "An Adaptive Optimal-Kernel Time Frequency Representation " Jones and Baraniuk (1995) IEEE transactions on signal processing 43, 2361-2371

It works very well and is very fast. However, with 2GB RAM it is only possible to analyze signals of about 3.5 seconds at a sampling frequency of 4410Hz.

Note that the software is compiled to run on windows machines and requires the Matlab signal processing toolbox.

[tarek ben kadjouh]

I'm working in the estimation of the life prediction of the mechanical components (bearings gears ....etc) i have search for an algorithme of the time frequency analysis (svd singular value decomposition ) and the algorithe of the expectation-maximisation ) with matlab .
thank you

[hitesh sachdev]

good

[Xin Hu]

thank you for the job you have done. the software do me a great favor. the resoult and the speed are better than what i have used. Again, thanks!

[peng shixin]

 

[ZHOU GAOBEI]

I NEED

[jack loman]

how can i use it in details?

[Rakesh]

I have tried using this application for a time series of 250 secs long (sampled at 100 Hz) but the application crashed Matlab. Is it the limitation of my computer or its the program? I have tried other TFA alorithms buy nothin seems to handle this long data.. it takes forever...any help us appreciated!