Performance Analysis of different filters for power line interface reduction in ECG signal

Abstract

Over the years Computer aided analysis of ECG signal is gaining with tremendous amount of work being carried out all over the world. This paper is a small step on our part in that direction, ECG Electrocardiogram signal most comely known recognized and used biomedical signal, the ECG signal is very sensitive in nature, and even if small noise mixed with original signal the various characteristics of the signal changes, Data corrupted with noise must either filtered or discarded, filtering is important issue for design consideration of real time heart monitoring systems. The purpose of this paper is to quantify relative performance analysis of different filtering methods for power line interface reduction. The data base for the performance analysis is created by simulation of ECG signal , an ideal ECG signal is best for performance analysis, then data base is corrupted with 50 Hz power line interface ,the ability of different filter (use IIR Notch , Wiener, adaptive filter) are checked by changes in filtered signal, signal to noise ratio, Power of the signal, Power spectral density ,spectrogram of the signal , The location of peaks and its amplitude also measured by Pan Tompkins algorithm for performance analysis of filters. The results have clearly indicated that there is reduction in Power line noise in the ECG signal changes according to filter, and the best result is shown by adaptive filter we can see it easily in spectrogram, The results have been concluded using Mat lab and Simulated ECG database.