Notch filter design using the α-scaled sampling Kernel and its application to power line noise removal from ECG signals

Abstract

A new design approach is proposed for sharp notch FIR filters, whereby a modified α - scaled sampling kernel is utilized. In particular, the proposed approach provides closed-form formulae for filter coefficients, leading to an effective design procedure for sharp notch filters with given specifications. Simulation results demonstrate that the proposed design method yields high performance in removing the power line interference from ECG signals.