BandpassFilter
BandpassFilter[data,{ω1,ω2}] applies a bandpass filter with cutoff frequencies ω1 and ω2 to an array of data.
BandpassFilter[data,{{ω,q}}] uses center frequency ω and quality factor q.
BandpassFilter[data,spec,n] uses a filter kernel of length n.
BandpassFilter[data,spec,n,wfun] applies a smoothing window wfun to the filter kernel.
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