Heart & Lung Sound Learning Module Proper use of a stethoscope: Covers correct points of cardiac auscultation, use of bell vs. diaphragm, dual head and single tunable head. Normal Heart Sounds: This tutorial covers normal heart sounds and their locations. Normal Lung Sounds: A graphical representation of the pulmonary track is displayed, with the ability to click over the area where Tracheal, Bronchial, Bronchovesicular and Vesicular lung sounds would be heard. Abnormal Lung Sounds: This section of the software displays a real time spectrogram of the lung sound and a detailed description of the abnormal lung sound and pathophysiology. Comprehensive guide to heart and lung sound assessment and associated pathophysiology.