heart sounds are produced only in some rare conditions due to gallop.In this paper,we are interested in recording only the first and second heart sounds. Experiments were conducted on the chest region to find the best spot for obtaining recordable heart sounds. As indicated in Fig. 4, the four locations of the valves were identified and selected for recording purposes. Based on the experiments,the heart sounds captured from the microphone were heard the loudest in the pulmonary region containing the pulmonary valve. Since the pulmonary valve is associated with the S2 sound,in most cases the decibel level of S2 is higher than that of the S1. Table I as listed in[6]gives the location of valves in the chest with respect to the intercostal space and sternum.