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Hints to smoothe noisy data
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Hi can someone of you give me a tip how i could best smooth following data to eliminate noise and to emphasize the peaks. I attached the plot of the raw measurement beow.
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Cris LaPierre
on 24 Jan 2019
"Best" way depends on many things. Classic ways to remove noise are signal averaging if your signal is repeatable, or applying a moving average. If you know something about the frequency of your desired signal, you could apply a filter.
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Bjorn Gustavsson
on 24 Jan 2019
It sounds like you want a filter that is similar to what you get with the wiener2 function - from the top of my head I dont remember if it works just as great on 1-D signals, but you can look at its source-code. This filter (Lee's sigma-filter) filters variations that are small compared to the local variance by keeps spikes.
HTH
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