RESTORATION OF THE VOICE TIMBRE IN TELEPHONE NETWORKS BASED ON BOTH VOICE AND LINE PROPERTIES (FriAmOR3)

Author(s) : Aline Neves (Université René Descartes, France) Gaël Mahé (Université René Descartes, France) Mamadou Mboup (Université René Descartes, France)

Abstract : The voice timbre suffers from different forms of distorsions in a telephone link. In this paper, we propose a new blind equalizer for correcting these distortions, based on the combination of two different methods. The first one is a blind equalization method consisting in matching the long term spectrum of the processed signal to a reference spectrum, while the second one is a precompensation method, based on the physical characteristics of transmission lines. The new method is compared to the first one, showing a significant gain in performance.

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