AUDIO DECODER, AUDIO ENCODER, METHOD OF DECODING AUDIO SIGNAL, METHOD OF ENCODING AUDIO SIGNAL, COMPUTER PROGRAMME AND AUDIO SIGNAL Russian patent published in 2015 - IPC G10L19/08 G10L19/20 

FIELD: physics, audio.

SUBSTANCE: invention relates to encoding and decoding audio signals. The technical result is achieved due to an audio decoder for obtaining decoded audio information based on entropy encoded audio information, which includes a context-based entropy decoder configured to decode the entropy-encoded audio information depending on a context, which is based on previously-decoded audio information in a non-reset state. The context-based entropy decoder is configured to select mapping information for deriving the decoded audio information from the encoded audio information, depending on the context. The context-based entropy decoder consists of a context resetter configured to reset the context for selecting the mapping information to a default context, which is independent from the previously-decoded audio information, in response to overhead in the encoded audio information.

EFFECT: enabling adaptation of rules for mapping entropy decoding information to signal statics.

19 cl, 21 dwg