Heart Sound Measurement and Analysis System with Digital Stethoscope

This paper focuses on the heart sound measurement and analysis system for in-home use of heart condition monitoring. The heart sound acquiring system includes a traditional chest-piece, an earphone, a microphone and an IC recorder. The recorded data transmitted into a computer by USB interface are a...

Full description

Saved in:
Bibliographic Details
Published in2009 2nd International Conference on Biomedical Engineering and Informatics pp. 1 - 5
Main Authors Haibin Wang, Jian Chen, Yuliang Hu, Zhongwei Jiang, Choi Samjin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2009
Subjects
Analytical models
Biomedical monitoring
Computer interfaces
Condition monitoring
Data mining
Headphones
Heart
Microphones
Stethoscope
Universal Serial Bus
Online AccessGet full text

Cover

More Information
Summary:This paper focuses on the heart sound measurement and analysis system for in-home use of heart condition monitoring. The heart sound acquiring system includes a traditional chest-piece, an earphone, a microphone and an IC recorder. The recorded data transmitted into a computer by USB interface are analyzed by the analytical model of single degree-offreedom(SDOF) for extracting cardiac sound characteristic waveform(CSCW). Furthermore, the 4 characteristic parameters [T1, T2, T11, T12] related to the first heart sound (SI) and the second heart sound (S2) are defined by the time intervals between the crossed points of the CSCW and the threshold value (THV) line in order to discriminate normal and abnormal heart sounds. Meanwhile, an easy understanding graphical representation for these parameters is considered, so that inexperienced users are able to monitor their heart condition easily. Finally, the case study on 40 normal and 20 abnormal heart sounds from 10 healthy volunteers and 5 patients with heart disorders is carried out, the higher discrimination performances are achieved 92.5%, 95% in accuracy, respectively. The usefulness and efficiency of this proposed system and the CSCW method are demonstrated.
ISBN:9781424441327
1424441323
ISSN:1948-2914
DOI:10.1109/BMEI.2009.5305287