| Reduction of heart sound interference from lung sound signals using empirical mode decomposition technique. | |
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MedLine Citation:
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PMID: 21888530 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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During the recording time of lung sound (LS) signals from the chest wall of a subject, there is always heart sound (HS) signal interfering with it. This obscures the features of lung sound signals and creates confusion on pathological states, if any, of the lungs. A novel method based on empirical mode decomposition (EMD) technique is proposed in this paper for reducing the undesired heart sound interference from the desired lung sound signals. In this, the mixed signal is split into several components. Some of these components contain larger proportions of interfering signals like heart sound, environmental noise etc. and are filtered out. Experiments have been conducted on simulated and real-time recorded mixed signals of heart sound and lung sound. The proposed method is found to be superior in terms of time domain, frequency domain, and time-frequency domain representations and also in listening test performed by pulmonologist. |
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Authors:
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Ashok Mondal; P S Bhattacharya; Goutam Saha |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-2 |
Journal Detail:
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Title: Journal of medical engineering & technology Volume: - ISSN: 1464-522X ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-9-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7702125 Medline TA: J Med Eng Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology , Kharagpur , India. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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