BandstopFilter

BandstopFilter[data,{ω1,ω2}] applies a bandstop filter with cutoff frequencies ω1 and ω2 to an array of data.

BandstopFilter[data,{{ω,q}}] uses center frequency ω and quality factor q. 

BandstopFilter[data,spec,n] uses a filter kernel of length n.

BandstopFilter[data,spec,n,wfun] applies a smoothing window wfun to the filter kernel.

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