Separation of Fine Crackles from Vesicular Sounds by a Nonlinear Digital Filter

Mariko Ono, Kaoru Arakawa, Masashi Mori, Tsuneaki Sugimoto, Hiroshi Harashima

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Crackles are discontinuous adventitious sounds, and their separation is an important process in the analysis of lung sounds. In order to separate the crackles from vesicular sounds automatically, we used a nonlinear digital filter which was designed to separate nonstationary from stationary signals, We applied this filter to the lung sounds recorded from six patients with pulmonary fibrosis. The separation was satisfactory enough to make this method useful in clinical medicine.

Original languageEnglish
Pages (from-to)286-291
Number of pages6
JournalIEEE Transactions on Biomedical Engineering
Volume36
Issue number2
DOIs
Publication statusPublished - Feb 1989

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