DocumentCode :
3397073
Title :
Classification of native heart valve sounds using the Choi-Williams time-frequency distribution
Author :
Bentley, P.M. ; McDonnell, J.T.E. ; Grant, P.M.
Author_Institution :
Dept. of Electr. Eng., Edinburgh Univ., UK
Volume :
2
fYear :
1995
fDate :
20-23 Sep 1995
Firstpage :
1083
Abstract :
Describes the novel application of time-frequency (T-F) distributions to the assessment of heart valve condition. The Choi-Williams distribution (CWD) was applied to a set of 45 normal/abnormal valve subjects and 9 descriptive features were extracted from the resulting T-F plots. A definition of normality, for each of the 9 features, was produced and assessing the performance of the 45 data subjects with respect to these criteria resulted in correct classification of 44 of the 45 subjects. This work empirically demonstrates the suitability of T-F techniques as an aid to the assessment of cardiac condition and clearly shows the advantages of T-F over classical spectral estimation techniques
Keywords :
acoustic signal processing; cardiology; feature extraction; medical signal processing; time-frequency analysis; Choi-Williams time-frequency distribution; abnormal valve subjects; cardiac condition assessment; classical spectral estimation techniques; descriptive features; heart valve condition assessment; medical diagnostic technique; native heart valve sounds classification; normality definition; Attenuation; Data acquisition; Data mining; Electrocardiography; Feature extraction; Heart valves; Kernel; Microphones; Signal analysis; Time frequency analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
Type :
conf
DOI :
10.1109/IEMBS.1995.579505
Filename :
579505
Link To Document :
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