"DE-NOISING" ADAPTATIF

In this paper we present an adaptive signal processing method for the enhancement of the signal to noise ratio based on the use of the discrete wavelet transform DWT. The consequence of the use of this transform is the whitening of the perturbation. We optimize the well-known Donoho’s denoising method by the selection (based on an adapive search algorithm) of a threshold that maximizes the output signal to noise ratio.