[A new method for heart sound analysis in time domain].
In order to discriminate normal and abnormal heart sounds accurately and effectively, a new method is proposed to analyze heart sounds, namely heart sound characteristic waveform (HSCW) method. Digital stethoscope is used to collect heart sound signals. The recorded data are transmitted to a computer by USB interface for analysis based on HSCW, which is extracted from an analytical model of single degree-of-freedom (SDOF). Furthermore, a case study on the normal and abnormal cardiac sounds is demonstrated to validate the usefulness and efficiency of the proposed HSCW method. Besides, in order to test the accuracy of discriminating normal and abnormal heart sounds, 40 normal and 20 abnormal heart sounds are collected and analyzed, the accuracy performances are achieved by 92.5% and 95.0%, respectively.
Hu
Yuliang
Y
Sichuan Provincial Key Laboratory of Signal and Information Processing, School of Electrical and Information Engineering, Xihua University, Chengdu 610039, China. hu99aiai@tom.com
Wang
Haibin
H
Chen
Jian
J
Jiang
Zhongwei
Z
Qiao
Junxuan
J
D000465:Algorithms; D006326:Heart Auscultation / Q000295:instrumentation* / Q000379:methods; D006347:Heart Sounds / Q000502:physiology*; D006801:Humans; D010701:Phonocardiography / Q000379:methods*; D012815:Signal Processing, Computer-Assisted