The auscultation technique in which a stethoscope is used to listen the sounds of a body is
poorly suited to investigate the heart abnormalities. By analyzing the phonocardiogram (PCG) which is a recording of the acoustical waves produced by mechanical action of the heart by modern digital signal processing technique give more accurate and valuable information about the heart condition. A PCG consist of the two components, the heart sounds and heart murmurs, as acoustic vibrations. The heart sounds are lowfrequency transient signals produced by the heart valves. The heart murmurs are noise-like signals caused by the turbulence of blood flow