Noise Removal without affecting peaks

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Mubashir 2018-5-14

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https://ww2.mathworks.cn/matlabcentral/answers/400616-noise-removal-without-affecting-peaks

评论： Mubashir 2018-5-15

data.mat

I acquired voltage waveform with noise. I tried different filters to remove noise but it also affects peak levels. Please help me in this regard. I have attached my data file too.

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John D'Errico 2018-5-14

编辑：John D'Errico 2018-5-14

But ANY type of smoothing/filtering/noise removal process will treat high peaks that are uncharacteristic of the rest of your curve as potentially noise. So any such method will always try to reduce those peaks. And surely if your data is as noisy as it appears, then there is no reason to believe that a peak is not just as likely to have noise in it too.

If you cannot tolerate something playing with those peaks, then you cannot tolerate any noise removal scheme.

Mubashir 2018-5-15