THE FAST FOURIER TRANSFORM AND THE CONTINUOUS WAVELET TRANSFORM ANALYSIS OF THE NORMAL AND PATHOLOGICALS PHONOCARDIOGRAM SIGNALS
Mots-clés :
Normal, pathological, phonocardiogram, first sound, second sound, FFT, CWT, time-frequency analysisRésumé
This paper present the applications of the fast Fourier transform (FFT) and the continuous wavelet transform (CWT) to analyse the normal and pathological cases of the phonocardiogram signals (PCG). The wavelet transform provides more features of the PCG signals that will help physicians to obtain qualitative and quantitative measurements of the time-frequency PCG signal characteristics. The frequency content of such a signal is shown to be determined by the FFT without difficulties.Téléchargements
Références
- Luisada A.A., "The sounds of the normal heart", St Louis: W.H. Green, (1972).
- Rangayyan R.M. and Lehner R.J., A review. CRC Critical Reviews in Biomedical Engineering, 15(3), (1988), pp. 211-236.
- Feigenil L.P., "Physical characteristics of sound and haering", American journal of Cardiology, 28(2), (1971), pp. 130-133.
- Tuteur F.B. "Wavelet Transforms in signal detection", IEEE ICASSP, CH2561-9, (1988), pp. 1435-1438.
- Grossmann A. Holschneider Kronland-Martinet R. and Morlet J., "Detection of abrupt Changes in sound signal with the help of the wavelet transform", In: Inverse problemes: An interdisciplinary study. Advances in Electronics and Electron physics. Supplement 19 (New York, Academic), (1987), pp. 298-306.
- Papoulis, "The Fourier Integral and its applications", Mc Graw-Hill, (1962).
- Grossmann A. and Kronland Martinet R., "Time and Scale representation obtained through Continuous Wavelet Transforms", In Proc. Int. conf. Applications, J.L., Lacoume et al., Eds, New-York, Elsevier Science Pub., (1982), pp. 475-482.
- Coubes M., Grossman A., Tchanitchian P.H., "Wavelets, Time-Frequency Methods and Phase Space", Berlin, Springer, IPTI, (1989).
- Obaidat M.S. and Matalgah M.M., "Performance of the Short Time Fourier Transform and Wavelet Transform to Phonocardiogram signal analysis", Proceeding of the ACM 1992 Symposium an Applied computing, March, (1992), pp. 856-862.
- Obaidat M.S., "Phonocardiogram signal analysis: techniques and performance comparison", Journal of Medical Engineering Technologie, Vol. 17, N°6, November-December (1993), pp. 221-227.
- Olivier R. and Duhamel P., "Fast algorithms for Discrete and Continuous Wavelet Transforms", IEEE Transactions Information Theory, Vol. 38, N°2, march (1992), pp. 569-586.
- Lehner R.J., Rangayyan M., "A three-channel micro-computer system for segmentation and characterization of the phonocardiogram", IEEE Transactions On biomedical Engineering, Vol. BME-34, N°6, Juin (1987).
- Djebbari A., "Synthèse des méthodes d’analyse temporelle, spectrale et spectro-temporelle du signal phonocar-diogramme", magister thesis, Department of Electronics, Faculty of Science Engineering, University Aboubekr Belkaid, Tlemcen, Algeria, (1999), pp. 18-24.
- Bentley P.M., Grant and Mc.Donnel J.T.E., "Time-frequency and Time-scale for the classification of native and Bioprosthetic heart valve sound", IEEE Transactions on Biomedical Engineering, Vol. 45, N°1, January (1998), pp. 125-128.
- E. Van Vollenhoven and Chin J.G.J., "Phonocardiography: Past, present and future", Acta Cardiologica, vol. XLIII, (1993), pp. 337-344.
- T.S. Leung, White P.R., Cook J., Collis W.B., Brown E. and Salmon A.P., "Analyse of the second heart sound for diagnosis of paediatric heart diseas", IEEE Proc. Sci. Meas. Technol., Vol. 145, N°6, November (1998), pp. 285-290.
