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A lung sound category recognition method based on wavelet decomposition and BP neural network
Shi Y.1; Li Y.1; Cai M.2; Zhang X.D.2
2019
Source PublicationInternational Journal of Biological Sciences
ISSN1449-2288
Volume15Issue:1Pages:195-207
Abstract

In this paper, a method of characteristic extraction and recognition on lung sounds is given. Wavelet de-noised method is adopted to reduce noise of collected lung sounds and extract wavelet characteristic coefficients of the de-noised lung sounds by wavelet decomposition. Considering the problem that lung sounds characteristic vectors are of high dimensions after wavelet decomposition and reconstruction, a new method is proposed to transform the characteristic vectors from reconstructed signals into reconstructed signal energy. In addition, we use linear discriminant analysis (LDA) to reduce the dimension of characteristic vectors for comparison in order to obtain a more efficient way for recognition. Finally, we use BP neural network to carry out lung sounds recognition where comparatively high-dimensional characteristic vectors and low-dimensional vectors are set as input and lung sounds categories as output with a recognition accuracy of 82.5% and 92.5%.

KeywordBp Neural Network Category Recognition Linear Discriminant Analysis Lung Sound Wavelet De-noising
DOI10.7150/ijbs.29863
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaBiochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics
WOS SubjectBiochemistry & Molecular Biology ; Biology
WOS IDWOS:000453258300018
PublisherIVYSPRING INT PUBL
The Source to ArticleScopus
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Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Health Sciences
Affiliation1.School of Automation Science and Electrical Engineering, Beihang University, Beijing, 100191, China;
2.Faculty of Health Sciences, University of Macau, Taipa, Macau
Recommended Citation
GB/T 7714
Shi Y.,Li Y.,Cai M.,et al. A lung sound category recognition method based on wavelet decomposition and BP neural network[J]. International Journal of Biological Sciences,2019,15(1):195-207.
APA Shi Y.,Li Y.,Cai M.,&Zhang X.D..(2019).A lung sound category recognition method based on wavelet decomposition and BP neural network.International Journal of Biological Sciences,15(1),195-207.
MLA Shi Y.,et al."A lung sound category recognition method based on wavelet decomposition and BP neural network".International Journal of Biological Sciences 15.1(2019):195-207.
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