title: [Results of frequency analysis studies of first heart sounds with a computer program].
mesh_terms: D000293:Adolescent; D000328:Adult; D004562:Electrocardiography / Q000295:instrumentation*; D006326:Heart Auscultation; D006347:Heart Sounds; D006801:Humans; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted; D012984:Software
vernacular_title: Ergebnisse frequenzanalytischer Untersuchungen an ersten Herztönen mit einem Computerprogramm.