A Three-Channel Microcomputer System for Segmentation and Characterization of the Phonocardiogram

We present here details of a microcomputer system developed to segment the phonocardiogram signal (PCG) and characterize murmurs. Using the ECG and carotid pulse as references, the PCG is segmented into systolic and diastolic parts. Four parameters representing the time and frequency domain characteristics of the signal segments are then computed. Results of application of the methods to 47 phonocardiogram signals are presented. The use of these parameters for the detection and classification of murmurs is discussed.

[1]  C. Starmer,et al.  Processing of arterial pressure waves with a digital computer. , 1973, Computers and biomedical research, an international journal.

[2]  M. B. Rappaport,et al.  Physiologic and physical laws that govern auscultation, and their clinical application , 1941 .

[3]  Ivaturi S. N. Murthy,et al.  New Concepts for PVC Detection , 1979, IEEE Transactions on Biomedical Engineering.

[4]  I S Murthy,et al.  Quantitative analysis of the phonocardiogram for dectection of murmurs. , 1979, Journal of biomedical engineering.

[5]  Rafael Beyar,et al.  Heart-Sound Processing by Average and Variance Calculation - Physiologic Basic and Clinical Implications , 1984, IEEE Transactions on Biomedical Engineering.

[6]  L. Feigen,et al.  Physical characteristics of sound and hearing. , 1971, The American journal of cardiology.

[7]  J. Butterworth,et al.  Auscultatory Acumen in the General Medical Population , 1960 .