Analysis of the electrocardiogram signal by the lifting scheme

We present in this communication an analysis of the cardiac signals by the lifting scheme wavelet transform (LS.W.T). The principal goal of this study is to make the diagnosis of the signals electrocardiogram ECG respect the fidelity criterion of reconstruction i.e. good a value of P.R.D (percent root square difference) which evaluates the quality of equivalence between the original and the reconstructed signals of ECG. The diagnosis of the electrocardiograms ECG is based on a multiresolution wavelet analysis. The method starts with the decomposition and approximation of ECG signals into the details. We give some examples of the application of this method on electrocardiography signals and we also treat it in two cases - ECG with normal rhythm and the other disturbs the rhythm. Thus we locate the frequencies components of the ECGs.