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Evaluation of the Spectral Phonocardiographic Analysis

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2 Author(s)
Webb, G.N. ; School of Medicine, The Johns Hopkins University, Baltimore, Md. ; Chen, T.T.

Heart sounds can be divided into three classes: short duration pulses (first and second heart sounds); broadband long duration noise (murmur); and long duration sounds having distinct harmonic pattern (musical murmurs). The characteristics of the analysis of these classes are illustrated, and the timing, duration, and filtering artifacts are discussed. A comparison between phase and amplitude filtering is given. Application of this research instrument to clinical size and cost is considered.

Published in:

Medical Electronics, IRE Transactions on  (Volume:PGME-9 )

Date of Publication:

Dec. 1957

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