Abstract
Due to non-stationary multicomponent nature of the electrocardiogram (ECG) signal its analysis by the monodimensional techniques temporal and frequenctial can be very difficult. The use of the time-frequency techniques can be inevitable to achieve to a correct diagnosis. Between the different existing parametric and non-parametric time-frequency techniques the Periodgram Capon Choi-Williams and Smoothed Pseudo Wigner-Ville were chosen to deal with analysis of this biomedical signal. In a first time a comparison between these time-frequency techniques was made by analyzing modulated signal to make in evidence the technique that gives a good resolution and low level of cross-terms. In a second time the Periodogram which presents a powerful technique was applied to a normal and abnormal ECG signal. The results show the effectiveness of this time-frequency in analyzing this type of biology signal.
Highlights
The electrocardiogram (ECG) is one of the major physiological signals generated from heart’s rhythmic polarization and depolarization
This paper presents a comparative study of some parametric and non parametric techniques
The abnormalities treated in this work, are cu ventricular tachyarrhythmia and malignant ventricular arrhythmia
Summary
The electrocardiogram (ECG) is one of the major physiological signals generated from heart’s rhythmic polarization and depolarization. The P wave presents the arterial activation, the QRS complex reflects the ventricular depolarization and T wave refers to the ventricular repolarization [1, 2]. These different ECG components have specific shapes in the time and frequency domains, which allow the specialists to detect possible existing anomalies only by analyzing ECG signal in these two domains. The timefrequency techniques used are able to present the evolution of ECG signal power as a function of both time and frequency. The cross-terms present the principle problem of the timefrequency which can obscure some important information in the time-frequency plan. We will conclude with a conclusion in the section VI
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
