Document Detail

Noise detection during heart sound recording.
MedLine Citation:
PMID:  19963569     Owner:  NLM     Status:  MEDLINE    
Heart sound is a valuable biosignal for early detection of a large set of cardiac diseases. Ambient and physiological noise interference is one of the most usual and high probable incidents during heart sound acquisition. It may change the prominent and crucial characteristics of heart sound which may possess important information for heart disease diagnosis. In this paper, we propose a new method to detect ambient and internal body noises in heart sounds. The algorithm utilizes physiologically inspired periodicity/semi-periodicity criteria. A small segment of clean heart sound exhibiting periodicity in the time and in the frequency domain is first detected. The sound segment is used as a template to detect uncontaminated heart sounds during recording. The technique has been tested on the heart sounds contaminated with several types of noises, recorded from 68 different subjects. Average sensitivity of 95.13% and specificity of 98.65% for non-cardiac sound detection were achieved.
D Kumar; P Carvalho; M Antunes; J Henriques
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2009     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2009  
Date Detail:
Created Date:  2009-12-07     Completed Date:  2010-03-16     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3119-23     Citation Subset:  IM    
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MeSH Terms
Biomedical Engineering / methods
Data Interpretation, Statistical
Equipment Design
Fourier Analysis
Heart Auscultation / methods
Heart Sounds / physiology*
Phonocardiography / methods
Reproducibility of Results
Signal Processing, Computer-Assisted
Sound Spectrography / methods
Time Factors

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

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