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Heart Sound Abnormality Detection Using Short Time Fourier Transform and Continuous Wavelet Transform

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3 Author(s)
Vikhe, P.S. ; Dept. of Instrum. Eng., S.G.G.S.I.E.& T., Nanded, India ; Nehe, N.S. ; Thool, V.R.

This paper is concerned with the analysis of the first (S1) and second (S2) heart sound of the Phonocardiogram signal (PCG) using Short -Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT). The frequency content and time duration of S1 and S2 can be determined by the STFT without difficulties. The second heart sound S2 consists of two major components A2 and P2. The time delay between them is very important for the medical diagnosis. Experiments are performed on normal and pathological PCG signals. Frequency contents of S1 and S2 of PCG as well as time duration of them have been measured using STFT. Split between A2 and P2 have been measured using CWT.

Published in:
Emerging Trends in Engineering and Technology (ICETET), 2009 2nd International Conference on

Date of Conference: 16-18 Dec. 2009

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