Comparison between two estimation methods of the complex gain of an optimal Wiener filter

摘要

This paper deals with the adoptive estimation of a linear and stationary filter in noise cancelling . The optimal Wiener filter isudsolution of the minimization of a quadratic criterion . It needs.the estimation of the power spectra af the observed signais.udFiltering operation in the frequency-domain may produce estimation 'errors if we take no precaution . We compare in this paperudtwo methods called « Overlap-add-method » and « Overlap-save-method » which aim is to reduce these errors .