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create an envelop for one oscillating curve

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Alaa Hameed 2017-3-23

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https://ww2.mathworks.cn/matlabcentral/answers/331597-create-an-envelop-for-one-oscillating-curve

评论： Alaa Hameed 2017-3-24

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 2017-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/331597-create-an-envelop-for-one-oscillating-curve#answer_260204

If you have the Signal Processing Toolbox, try ENVELOPE.

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Alaa Hameed 2017-3-24

Thanks Greg ... I will

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