IEEE transactions on bio-medical engineering
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IEEE Trans Biomed Eng · Dec 1997
Comparative StudySeparation of discontinuous adventitious sounds from vesicular sounds using a wavelet-based filter.
The separation of pathological discontinuous adventitious sounds (DAS) from vesicular sounds (VS) is of great importance to the analysis of lung sounds, since DAS are related to certain pulmonary pathologies. An automated way of revealing the diagnostic character of DAS by isolating them from VS, based on their nonstationarity, is presented in this paper. ⋯ When compared to other separation tools, the WTST-NST filter performed more accurately, objectively, and with lower computational cost. Due to its simple implementation it can easily be used in clinical medicine.