Optimum Localization of Phonocardiographic Sensors and Analysis of These Signals

Abstract

This work is focused on measurement of heart sounds, localization of PCG sensors and analysis of the acquired signals. Two auscultation sites were designed for the synchronized measurement of several PCG signals. The automatic multiple source heart sound detector of the first and the second heart sound was designed as well. The designed detector uses the Shannon energy to obtain an envelope of a PCG signal and synchronization with the R peak and the T wave of an electrocardiogram for accurate determination of the heart sounds. The main result of this work is the analysis of the phonocardiographic signal obtained from different positions on the chest and the comparison of the differences in the time domain for various auscultation areas.