{"title":"The heart sound de-noising method based on the wavelet packet and local noise estimation","authors":"X. Cai, Zufu Yang, Shoulin Li","doi":"10.1109/BMEI.2015.7401543","DOIUrl":null,"url":null,"abstract":"Heart sound is a kind of typical non-stationary weak signal. Heart sounds from clinical settings are unavoidably contaminated by some noise. The noise in heart sounds includes colored noise and white noise. A de-noising method is presented in this paper, which is based on a harmonic wavelet packet and adopts the methods of finding an optimal decomposing under the minimum entropy principle, selecting reasonable decomposing depths and estimating the local noise as de-noising thresholds. The experiment results show that the method is effective.","PeriodicalId":119361,"journal":{"name":"2015 8th International Conference on Biomedical Engineering and Informatics (BMEI)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 8th International Conference on Biomedical Engineering and Informatics (BMEI)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BMEI.2015.7401543","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Heart sound is a kind of typical non-stationary weak signal. Heart sounds from clinical settings are unavoidably contaminated by some noise. The noise in heart sounds includes colored noise and white noise. A de-noising method is presented in this paper, which is based on a harmonic wavelet packet and adopts the methods of finding an optimal decomposing under the minimum entropy principle, selecting reasonable decomposing depths and estimating the local noise as de-noising thresholds. The experiment results show that the method is effective.
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