savitzky golay filter function principle

[Sam.Huang]

Hi all

   I have a project of savitzky golay filter converter data,I don't understand that what is work for,Please help me explained the detail,such as why set polynominal order is 1 or 2 and side points is 5 and data converter calculated principle,thanks!!

[altenbach]

The help describes these inputs very clearly but why not use a more practical approach to find what works best for your particular kind of data? Simply graph the input and the filtered output on a graph together and play with the various inputs to see how the result changes.

[Sam.Huang]

Thank for your replying,I desired to know to how to converter data according to what principle. This is a part of my project for Microphone FR testing data smoothing.In other words is original data to filter data with what formula do it.thanks!!

[Henrik_Volkers · Accepted solution]

Wikipedia?

and from there the link to one of the most cited papers 😉

https://pubs.acs.org/doi/pdfplus/10.1021/ac60214a047

Another good source for such kind of filters:

http://www.holoborodko.com/pavel/numerical-methods/