Japanese journal of medical electronics and biological engineering
Online ISSN : 2185-5498
Print ISSN : 0021-3292
ISSN-L : 0021-3292
Detection and Discrimination of Adventitious Frames of Respiratory Sounds
Satoru HAYAMIZUNaomasa NAKAJIMATakao TAKIZAWAKimio KONNOKatsuki YOSHINOSohichi OSADASusumu TOGASHI
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1982 Volume 20 Issue 5 Pages 327-330

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Abstract
This paper describes the automatic recognition method which classifies every short frame of the respiratory sounds. Discrimination of every short frame enables not only detection of adventitious sound, but also separation and classification of respiratory sounds which contain different sounds at different times.
Discrimination consists of two stages. First by means of the mean square of residual error, respiratory 'sounds are classified into two classes, continuous sounds and discontinuous ones. Secondly each class is subdivided by means of feature parameters based on AIC (Akaike Information Criterion) which are transformed from PARCOR (Partial Autocorrelation) coefficients. The standard category sets are defined by R. Murphy's medical training tape, and the effectiveness of this method is shown by the discrimination experiment.
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© Japanese Society for Medical and Biological Engineering
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