Selectively using multiple entropy models in adaptive coding...

G - Physics – 10 – L

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G10L 15/00 (2006.01)

Patent

CA 2612537

Techniques and tools for selectively using multiple entropy models in adaptive coding and decoding are described herein. For example, for multiple symbols, an audio encoder selects an entropy model from a first model set that includes multiple entropy models. Each of the multiple entropy models includes a model switch point for switching to a second model set that includes one or more entropy models. The encoder processes the multiple symbols using the selected entropy model and outputs results. Techniques and tools for generating entropy models are also described.

La présente invention concerne des techniques et des outils permettant d'utiliser sélectivement plusieurs modèles entropiques pour le codage et le décodage adaptatifs. Par exemple, pour plusieurs symboles, un codeur audio sélectionne un modèle entropique à partir d'un premier ensemble de modèles qui contient plusieurs modèles entropiques. Chacun des multiples modèles entropiques comprend un point de commutation de modèle conçu pour commuter vers un second ensemble de modèles qui contient un ou plusieurs modèles entropiques. Le codeur traite les multiples symboles au moyen du modèle entropique et il produit les résultats. Cette invention concerne également des techniques et des outils permettant de produire des modèles entropiques.

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