Heartbeat Sounds application is for listening to the basic sound ofour life. Play Heartbeat Sounds and feel its relaxing naturalstrenght.There are six different sounds each with play and stopbuttons for proper timing. Show them to your kids, students todemonstrate the different ways of pulsations Love of your life willunderstand what you feel for him/her when you play HeartbeatSounds. In a healthy heart, there are only two audible heartsounds. The first heart sound is the sound created by the closingof the atrioventricular valves during ventricular contraction andis normally described as "lub". The second heart sound is the soundof the semilunar valves closing during ventricular diastole and isdescribed as "dub". Each sound consists of two components,reflecting the slight difference in time as the two valves close.