Figure 4From: A color spectrographic phonocardiography (CSP) applied to the detection and characterization of heart murmurs: preliminary results VSD in a 8-month-old patient, (CASE 2). VSD in a 8-month-old patient. Five cardiac cycles are shown. The spectrographic graph, bottom of the figure, indicates that the murmur has frequency components extending to 700 Hz (Case 2).Back to article page