ANALYSIS OF HEART SOUNDS AND HEART MURMUR

Abstract

The heart sounds are non-stationary and non-deterministic signals which are caused by the sudden closure of the heart valves at the different phases of cardiac contraction. They carry information on the anatomical and physiological state of the heart. In spite of the numerous advances and the decades of the declining death rates, cardiovascular diseases (CVDs) remain as the lead in the worldwide death. The effective of cost, accuracy and early detection of the cardiac illness are important in order to curb deaths which are caused by CVDs. Heart auscultation is an early screening method for diagnosis of heart diseases however it has a limitation in human hearing. With the aid of a computer assisted system, it can easily assists the physicians in diagnosing the patients. Analysis of the heart sounds can be an effective tool by non-invasively diagnoses the heart diseases and provides the physicians with the valuable diagnostic and prognostic information of heart malfunction that is related to the heart valves and hemodynamics. The ultimate goal for this project is to implement a heart sound analysis system that aids the physicians in the auscultation of the patients by preventing or reducing in giving wrong diagnosis to the patients. This project makes use of the signal processing techniques, segmentation and feature extraction to perform an automatic detection of heart sounds. The system is created based on a user-friendly concept where a Graphical User Interface (GUI) is been designed using the MATLAB software. The heart sound signal is able to be displayed graphically and classifies into normal or abnormal heart sound.