Separation of crackles and squawks from vesicular sounds using a wavelet-based filtering technique

Leontios J. Hadjileontiadis, Dimitrios A. Patakas, Nikolaos J. Margaris, Stavros M. Panas

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The separation of crackles and squawks from vesicular sounds using a wavelet-based filtering technique was discussed. A new stationary-nonstationary separation scheme (WTST-NST), which combines the efficiency of multiresolution analysis with hard thresholding, has been implemented for time domain (DAS) analysis. Experiments have shown that, despite the differences in the structural character among the three kinds of DAS, the WTST-NST filter has resulted, in all cases, in generally excellent quality in the separated signal. The filter has been easily implemented and could be used as an objective screening method in DAS analysis.

Original languageBritish English
Pages (from-to)649-657
Number of pages9
JournalCOMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering
Volume17
Issue number5
DOIs
StatePublished - 1998

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