I am looking for functions for for the "S-method" or the "Choi-Williams method"

I am working on time frequency analysis using Wigner-Ville distribution using the function WVD in MATLAB.

I am wondering if there are functions for for the "S-method" or the "Choi-Williams method"? There is one function for the S-method which can be found in https://www.mathworks.com/matlabcentral/fileexchange/76268-s_method_pub but it seems not to work properly.

Thanks for help

Answer 1

[Sourabh]

You can try using the “spectrogram” function to compute the S-method. You can find more information about it here:

• https://www.mathworks.com/help/signal/ref/spectrogram.html

As of now, there is no in-built function provided for the Choi-Williams method.

Also, you can find other functions from the following link which might serve your purpose:

• https://www.mathworks.com/help/signal/getting-started-with-signal-processing-toolbox.html
• https://www.mathworks.com/help/signal/time-frequency-analysis.html