Stationary Wavelet Transform Simulink

Hi all,

I noticed that the discrete wavelet transform block was provided by Simulink. But I donot want the downsampling procedure since it will cause the decreased length of the signal. Does anyone know how to simulate the stationary wavelet transform (SWT) in Simulink or can I use the 'MATLAB function' block to programe the SWT?

Thanks !

Answer 1

[Rhea Chandy]

Hello!

I understand that you are trying to implement a Stationary Wavelet Transform (SWT) in Simulink. The MATLAB Function block is indeed the easiest way to define custom functionality in Simulink. The swt function gives the discrete stationary wavelet transform. In addition, this File Exchange submission in the MathWorks File Exchange may be useful to you.

The submission "Stationary wavelet transform" is one of the several submissions in MATLAB File Exchange on MATLAB Central which is a forum for our product users to interact, exchange information and knowledge, without MathWorks' involvement. Feel free to contact the author of this submission directly for specific questions about the implementation.

More information on Implementing MATLAB Functions Using Blocks is available in the documentation if you need assistance.

[Di Liu]

Hi,

Thank you for your help and sharing the codes. I have downloaded it and tried to understand the code. By the way, does the MATLAB function block support the swt function? I read from other people they say the wavelet functions can only be realised by the 's' function.