Automatic phonocardiograph signal analysis for detecting heart valve disorders

Wen Chung Kao*, Chih Chao Wei

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

58 引文 斯高帕斯(Scopus)

摘要

Skilled cardiologists probe heart sounds by electronic stethoscope through human ears, but interpretations of heart sounds is a very special skill which is quite difficult to teach in a structured way. Because of this reason, automatic heart sound analysis in computer systems would be very helpful for medical staffs. This paper presents a complete heart sound analysis system covering from the segmentation of beat cycles to the final determination of heart conditions. The process of heart beat cycle segmentation includes autocorrelation for predicting the cycle time of a heart beat. The feature extraction pipeline includes stages of the short-time Fourier transform, the discrete cosine transform, and the adaptive feature selection. Many features are extracted, but only a few specific ones are selected for the classification of each hyperplane based on a systematic approach. The experiments are done by a public heart sound database released by Texas Heart Institute. A very promising recognition rate has been achieved.

原文英語
頁(從 - 到)6458-6468
頁數11
期刊Expert Systems with Applications
38
發行號6
DOIs
出版狀態已發佈 - 2011 六月

ASJC Scopus subject areas

  • 工程 (全部)
  • 電腦科學應用
  • 人工智慧

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