Do Mechanical Filters Provide a Good Approximation of Business Cycles? Technical Report No. 78 Alain Guay, Pierre St-Amant In this paper, the authors examine how well the Hodrick-Prescott filter (HP) and the band-pass filter recently proposed by Baxter and King (BK) extract the business-cycle component of macroeconomic time series. Content Type(s): Staff research, Technical reports Topic(s): Econometric and statistical methods JEL Code(s): C, C5, C52, E, E3, E32