Method and apparatus for modifying an encoded signal

Details Method and apparatus for modifying an encoded signal Method and apparatus for modifying an encoded signal

G - Physics

10

L

G10L 21/02 (2006.01)

Patent

CA 2601039

Signal Quality Enhancement is performed directly in a coded domain. Coded Domain-Signal Quality Enhancement (CD-SQE) is applied to an encoded signal populated substantially with encoded signal bits to produce an enhanced encoded signal. The enhanced encoded signal is outputted. Thus, the signal does not have to go through intermediate decoder/re-encoder(s), which can degrade overall speech quality. Computational resources required for a complete re- encoding are not needed. Overall delay of the system is minimized. The CD-SQE system can be used in any network in which signals are communicated in a coded domain, such as a Third Generation (3G) wireless network.

L'invention concerne une amélioration de qualité de signal directement effectuée dans un domaine codé. L'amélioration de qualité de signal de domaine codé (CD-SQE) est appliquée sur un signal codé contenant sensiblement des bits de signal codé pour produire un signal codé amélioré. Le signal codé amélioré est produit. Ainsi, il n'est pas nécessaire que le signal ne passe dans un ou dans plusieurs décodeurs/recodeur(s) intermédiaire(s), ce qui pourrait dégrader la qualité de parole globale. Des ressources informatiques requises pour un recodage complet ne sont pas nécessaires. Le retard global du système est réduit au minimum. Le système CD-SQE peut être utilisé dans un réseau quelconque dans lequel des signaux sont communiqués dans un domaine codé, notamment un réseau sans fil de troisième génération (3G).

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