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The diagnostic value of pulmonary sounds: A preliminary study by computer-aided analysis

✍ Scribed by R.B. Urquhart; J. McGhee; J.E.S. Macleod; S.W. Banham; F. Moran

Publisher: Elsevier Science
Year: 1981
Tongue: English
Weight: 850 KB
Volume: 11
Category: Article
ISSN: 0010-4825
DOI: 10.1016/0010-4825(81)90002-0

No coin nor oath required. For personal study only.

✦ Synopsis

We present results from a comparison, by pattern recognition techniques, of the spectra of lung sounds in patients with various respiratory diseases and in normal subjects. The sounds were successfully recorded onto analog magnetic tape in a hospital ward, and later digitised and Fourier transformed to produce the spectra Karhunen-Loeve analysis of the spectral envelopes yielded three well-separated clusters of points in two dimensions, corresponding respectively to two abnormal classes and to normal subjects. We suggest that the cluster separation as observed in this study may be due primarily to differences in breath sound rather than in adventitious sound.

Lung sounds Respiratory diseases Diagnosis Tape recording Microphone Spectral analysis Pattern recognition Feature extraction Karhunen-Loeve

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