Volume : IX, Issue : V, May - 2019

GROUP DELAY COMPENSATED DIGITAL FILTERS FOR DENOISING OF ECG SIGNAL

Hitender Kumar Tyagi, Reeta Devi, Dinesh Kumar

Abstract :

Cardiac diseases are the leading cause of deaths worldwide. Thus, the demand for routine checkup of the functional status of heart is increasing. Electrocardiography (ECG) is an easy and affordable non–invasive technique for this purpose. But for reliable diagnostic use of ECG signal in real–time or offline analysis, it is mandatory to acquire a noise free signal. To obtain clean ECG signal a common practice is to use digital finite impulse response (FIR) or infinite impulse response (IIR) filters. But an important requirement with use of these filters is to have a zero phase distortion along with compensated group delay response so as to catch the unaltered natural transients in the cardiac cycle. Thus in this paper, we have presented certain group delay compensation techniques to use with digital filters. Also the effect of the modified filter on characteristics of the ECG signal was also analyzed and presented in terms of the computed total power spectral density estimates (total PSD) of the filtered signal.

Keywords :

Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

GROUP DELAY COMPENSATED DIGITAL FILTERS FOR DENOISING OF ECG SIGNAL, Hitender Kumar Tyagi, Reeta Devi, Dinesh Kumar INDIAN JOURNAL OF APPLIED RESEARCH : Volume-9 | Issue-5 | May-2019

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