How to find the start and end time of each envelope in a signal? Multiple envelopes in 1 signal

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Chelsea Tanchip 2019-5-11

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https://ww2.mathworks.cn/matlabcentral/answers/461532-how-to-find-the-start-and-end-time-of-each-envelope-in-a-signal-multiple-envelopes-in-1-signal

I have a signal and I’m trying to count the number of envelopes + their start and end times (each envelope).

I have the derivative of the signal and tried to use findpeaks but it’s giving me more extrema than I need and I can’t impose a minimum peak distance/height/threshold because I have a wide variety of signals.

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How to find the start and end time of each envelope in a signal? Multiple envelopes in 1 signal

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How to find the start and end time of each envelope in a signal? Multiple envelopes in 1 signal

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