![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1022325/image.png)
How to smoothen the disturbed curve?
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I have plotted this curve attached below and it seems to be quite distorted in order to analyse it.![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1022300/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1022300/image.png)
How can I smoothen it to analyse it better?
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Sam Chak
2022-6-5
Adding a lowpass filter should filter the high-frequency input signal
with normalized passband frequency. For more info, please check the documentation on lowpass():
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1022325/image.png)
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Image Analyst
2022-6-5
If you want, you can fit the data to an exponential decay, if you think the underlying physics might follow that model. Demo attached.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1022445/image.png)
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