Help with Wavelet Identification
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I have a wavelet data from pore water pressure transducer. I want to apply a filter to smoothen it, but I don't know what kind of wavelet filter can be applied. (haar, Daubechies, Bior, Coiflets, Symlets, Morlet, Mexican Hat, Meyer etc)
Below is my wavelet data plotted.
3 个评论
John D'Errico
2020-7-16
The simple answer is to try the various choices, then use whatever makes you happy. Your eye is often the best filter anyway, since you iknow what it is that you want to achieve, and you understand what your data represents. You might try this:
As an interactive tool, it can help you to learn how you might proceed to smooth your data. By changing the wavelets used, you can immediately see the result, thus helping you to learn which wavelet would best apply.
We don't actually have your data anyway, just a plot of it. While a picture is useful, possibly worth a thousand words, the data behind that picture is more valuable yet, since then someone can show you how to apply a specific tool to your data. So if you want help, then it can help to attach a copy of some data to a comment or to your question.
Divyesh Rohit
2020-7-16
编辑：Divyesh Rohit
2020-7-16
Dear John,
Thanks a lot for the promt and resourceful answer.
The app is working well, I just had one question, while I am applying filter, the niosy part of the signal is getting filtered, but the peak value increases some 10% which is very critical for me.
Divyesh Rohit
2020-7-16
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2020-7-16
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