Power line interference removal in ECG using bernstein-polynomial-based FIR notch filter

In this paper, the power line interference removal in electrocardiogram (ECG) measurement signal is studied. First the FIR notch filter design based on Bernstein polynomial approximation is presented. The design method is simple and has an analytic solution. Then, a design example is illustrated to show the designed notch filter has exactly zero gain at notch frequency. Finally, an experiment of the 60Hz power line interference removal in ECG signal is made to demonstrate the effectiveness of the proposed filtering method.