Analysing heart murmurs using time-frequency methods

Author

White, P.R. ; Collis, W.B. ; Salmon, A.P.

Author_Institution

Inst. of Sound & Vibration Res., Southampton Univ., UK

fYear

1996

fDate

18-21 Jun 1996

Firstpage

385

Lastpage

388

Abstract

Discusses the use of time-frequency methods in the detection and analysis of heart murmurs in Phono-CardioGraphic (PCG) signals. These heart sounds can yield important diagnostic information and are measured in a non-invasive fashion. The methods employed are developed heuristically based on a model of heart sounds, but their connection to existing techniques is also presented. The method exploits averaged versions of the Pseudo-Wigner-Ville distribution (PWVD). The algorithms are shown to detect two types of heart murmur and to be able to distinguish between them, a task which requires an experienced human listener

Keywords

acoustic signal processing; bioacoustics; cardiology; medical signal processing; patient diagnosis; pattern classification; time-frequency analysis; algorithms; averaged versions; diagnostic information; heart murmurs; heart sounds; heuristic methods; noninvasive measurement; phono-cardiographic signals; pseudo-Wigner-Ville distribution; time-frequency methods; Cardiography; Cardiology; Electrocardiography; Frequency modulation; Heart; Hospitals; Humans; Signal analysis; Signal processing algorithms; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Time-Frequency and Time-Scale Analysis, 1996., Proceedings of the IEEE-SP International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-3512-0

Type

conf

DOI

10.1109/TFSA.1996.550073

Filename

550073