A New Method of Sorting of Heart Sound Signal Based on Wavelet Transform and Parameter Model Method
The heart sound signal, as a kind of weak biological signal under the background of strong noise, is easily subject to interference from noise of various sources. De-noising of heart sound signals, therefore, forms the primary basis for achieving non-invasive diagnosis of coronary heart disease. The paper proposes the five-level wavelet decomposition method for heart sound signals using Daubechies 6 wavelet (db6), which has yielded satisfactory results. A bi-spectrum estimation of the de-noised heart sound signals is performed based on the ARMA model, with appropriately and meticulously selected parameters. Experiments conducted on a total of 36 subjects, one half having healthy hearts and the other half afflicted with coronary heart disease, indicate that the db6-based decomposition method is capable of satisfactorily differentiating normal heart sound signals from abnormal ones.
Chen Tian-hua Guo Pei-yuan Xing Su-xia Zheng Yu
College of Computer and Information Engineering,Beijing Technology and Business University Beijing 100048, People’s Republic of China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）