title: A quantitative method for the in vitro study of sounds produced by prosthetic aortic heart valves. Part I: Analytical considerations.
mesh_terms: D001021:Aortic Valve; D005583:Fourier Analysis; D006326:Heart Auscultation; D006347:Heart Sounds; D006350:Heart Valve Prosthesis; D006801:Humans; D066298:In Vitro Techniques; D008722:Methods; D008838:Microcomputers; D008955:Models, Cardiovascular; D010701:Phonocardiography