This dataset contains human heart sound data collected via a novel optical stethoscope. It includes two subsets, the first subset is collected from human neck (21 subjects, 10 repetitions each) and the second subset is collected from 4 different chest positions (4 subjects, 5 repetitions each chest positions), namely, Mitral Valve (MV) and Tricuspid Valve (TV), Aortic Valve (AV) and Pulmonary Valve (PV).