Find baseline and sudden signal changes (as well as duration until return to baseline) for noisy data

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Lutetium 2021-4-11

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https://ww2.mathworks.cn/matlabcentral/answers/799062-find-baseline-and-sudden-signal-changes-as-well-as-duration-until-return-to-baseline-for-noisy-dat

回答： Cris LaPierre 2021-4-11

example.mat

I'm struggling with some data I extracted and hoping for some help on how to best deal with it. I have attached an example

The presumed baseline is marked in red. I have multiple consecutive events indicated by a sudden change in baseline and then becoming weaker over time before changing back to basline. I would need the length of such an event. How can I best determine the baseline and relaibly measure the lengths of these events. Hope someone can give me some directions

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Answer 1

Cris LaPierre 2021-4-11

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https://ww2.mathworks.cn/matlabcentral/answers/799062-find-baseline-and-sudden-signal-changes-as-well-as-duration-until-return-to-baseline-for-noisy-dat#answer_672672

You may find the Signal Processing Onramp very helpful. Chs 3 and 6 look directly applicable here, but perhaps some of the others will iterest you as well.