create an envelop for one oscillating curve

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Alaa Hameed
Alaa Hameed 2017년 3월 23일
댓글: Alaa Hameed 2017년 3월 24일
Hello, I have a data set for a displacement response of vibrating body. I need to characterize the decay increment of it. As initial step I need to know the function of the curve that envelop that response. It looks like this:
So I need to fined a function that passes through the tip points. NOTE: The data is a signal output, that is mean it is not smooth and have spikes! Thanks,

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Greg Dionne
Greg Dionne 2017년 3월 24일
If you have the Signal Processing Toolbox, try ENVELOPE.

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