I am working on magneto telluric data processing, i want to remove the noise(cultural,electrical noise) using discrete wavelet transform. I am at basic stage in code writing. So i need example program code which may applicable to all five(Ex,Ey,Hx,Hy,Hz) components of MT data.
You can find few examples in documentation of Wavelet Toolbox:
- Denoising Signals and Images (https://www.mathworks.com/help/wavelet/examples/denoising-signals-and-images.html),
- Wavelet Interval-Dependent Denoising (https://www.mathworks.com/help/wavelet/examples/wavelet-interval-dependent-denoising.html),
- Multivariate Wavelet Denoising (https://www.mathworks.com/help/wavelet/examples/multivariate-wavelet-denoising.html).
Alexander shared some good links. I'll share another one to a youtube video from MathWorks from a series on wavelets. Here, he goes through an example of denoising using a discrete wavelet transform:
https://www.youtube.com/watch?v=-OhibnAXBEM
If you don't have the MATLAB Wavelet Toolbox, you can also try the WMTSA Wavelet Toolkit for MATLAB which is a software package for the analysis of a data series using wavelet methods. It is an implementation of the wavelet-based techniques for the analysis of time series presented in:
Percival, D. B. and A. T. Walden (2000) Wavelet Methods for Time Series Analysis. Cambridge: Cambridge University Press.
http://www.atmos.washington.edu/~wmtsa/
Article Wavelet Methods for Time Series
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