Heart sounds analysis and murmurs
by S.M. Debbal; A. Meziane Tani
International Journal of Medical Engineering and Informatics (IJMEI), Vol. 8, No. 1, 2016

Abstract: Heart sounds and murmurs can be utilised more efficiently by medical doctors when they are displayed visually, rather than through a conventional stethoscope. Heart sounds and murmurs provide clinician with valuable diagnostic and prognostic information. Although heart sound analysis by auscultation is convenient as a clinical tool, heart sound signals are so complex and non-stationary that they have a great difficulty to analyse in time or frequency domain. The performance of the continuous wavelet transform (CWT) is discussed in this paper. This technique is a suitable technique to analyse such a signal. The work presented in the paper is a new approach. The results can be validated among themselves based on a comparison between the PCG signal 'normal' and the other 'pathological'. The spectro-temporal characteristics of the PCG signal will be used as reference for results of treatment of pathological PCG signals. It was also shown that the coefficients of the CWT give a graphic representation that provides a quantitative analysis simultaneously in time and frequency. It is therefore very helpful in extracting clinically useful information.

Online publication date: Tue, 15-Dec-2015

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