Working Paper
The Band pass filter
Abstract: The \"ideal\" band-pass filter can be used to isolate the component of a time series that lies within a particular band of frequencies, but applying this filter requires a data set of infinite length. In practice, some sort of approximation is needed. Using projections, the authors derive approximations that are optimal when the time-series representations underlying the raw data have a unit root, or are stationary about a trend.
https://doi.org/10.26509/frbc-wp-199906
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Bibliographic Information
Provider: Federal Reserve Bank of Cleveland
Part of Series: Working Papers (Old Series)
Publication Date: 1999
Number: 9906