THE FAST FOURIER AND THE WAVELET TRANSFORMS ANALYSIS
OF THE CARDIAC SOUNDS
S. M. Debbal*, F. Bereksi-Reguig
Geni -Biomedical Laboratory (GBM), Departement of Electronic
Faculty of Sscience Engineering ,University Aboubekr Belkaid Tlemcen
B.P. 119,Tlemcen 13000, Algeria
* Corresponding author. E-mail :firstname.lastname@example.org
Received : 06 March 2003 ; revised version accepted : 24 October 2003
The objective of the present paper is a synthesis study of the Fast Fourier Transform (FFT) and the Wavelet Transform (WT) in analysing the first and the second heartbeat signals of the phonocardiogram (PCG). It is shown that the wavelet Transform provide a good time-frequency representation and enough features of the PCG signal that will help physician to obtain qualitative and quantitative measurements and consequently aid to diagnosis.
Similary, it is shown that the frequency content of such a signal can be determined by the FFT only without difficulties.
Keywords : Heart auscultation; Spectral analysis; Time-frequency representation; Component localisation; Time delay .