Process and system for pre- and post-treatment of an audio...

Details Process and system for pre- and post-treatment of an audio... Process and system for pre- and post-treatment of an audio...

H - Electricity

04

L

H04L 27/34 (2006.01) G10L 21/02 (2006.01) H04B 1/62 (2006.01) H04H 1/00 (2006.01)

Patent

CA 2389785

Procédé et système adaptés pour modifier un signal audio ou de parole comportant une étape où le spectre en fréquence S(k) du signal est transformé par application d'une fonction non-linéaire. Le procédé comporte au moins les étapes suivantes: .cndot. déterminer le niveau A(k), B(k) de signal associé à une fréquence k en tenant compte des différents niveaux a(k), b(k) du signal pour la fréquence k concernée et/ou les fréquences voisines, (étape 2a, étape 8a) .cndot. appliquer la fonction non-linaire sur ledit niveau (A(k), B(k)).

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