Document Detail

The effectiveness of the wavelet transforms method in the heart sounds analysis.
MedLine Citation:
PMID:  19116854     Owner:  NLM     Status:  MEDLINE    
Heart sounds can be used more efficiently by medical doctors when they are displayed visually, rather through a conventional stethoscope. Heart sounds provide clinicians with valuable diagnostic and prognostic information. Although heart sound analysis by auscultation is convenient as a clinical tool, heart sound signals are so complex and non-stationary that they are very difficult to analyse in time or frequency domains. We have studied the extraction of features from heart sounds in the time-frequency domain for recognition of heart sounds through time-frequency analysis. The application of wavelet transform for the heart sounds is thus described. The performance of continuous wavelet transform, discrete wavelet transform and packet wavelet transform is discussed in this paper. After these transformations, we can compare normal and abnormal heart sounds to verify clinical usefulness of our extraction methods for recognition of heart sounds.
S M Debbal; F Bereksi-Reguig
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of medical engineering & technology     Volume:  33     ISSN:  1464-522X     ISO Abbreviation:  J Med Eng Technol     Publication Date:  2009  
Date Detail:
Created Date:  2008-12-31     Completed Date:  2009-08-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702125     Medline TA:  J Med Eng Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  51-65     Citation Subset:  IM    
Genie-Biomedical Laboratory (GBM), Department of Electronics, Faculty of Science Engineering, University Aboubekr Belkaid, Tlemcen, Algeria.
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MeSH Terms
Aortic Coarctation / diagnosis
Heart Sounds / physiology*
Image Enhancement / methods
Mitral Valve Stenosis / diagnosis
Phonocardiography / methods*
Reproducibility of Results
Signal Processing, Computer-Assisted*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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