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Analysis of Heart Murmurs by Electronics

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1 Author(s)
Richards, R.S. ; Natl. Res. Council, Ottawa, Canada.

This paper gives a brief survey of early and current work in the application of audio-frequency amplifiers, equipped with filters, to the diagnosis of abnormal heart conditions, and for use as teaching aids in medical schools. The possible application of a gating technique, i.e., filtering in time instead of in frequency, is discussed, and a description is given of some circuits which have been used for this purpose. Both filter systems have proved to be useful adjuncts to the stethoscope and, if used with a tape recorder, are valuable teaching aids.

Published in:

Medical Electronics, IRE Transactions on  (Volume:PGME-12 )