Patent Document ID: 8494865
Application ID: 13081241

Base Claim:
1. An audio decoder for providing a decoded audio information on the basis of an entropy encoded audio information, the audio decoder comprising: a context-based entropy decoder configured to decode the entropy-encoded audio information in dependence on a context, which context is based on a previously-decoded audio information in a non-reset state-of-operation; wherein the context-based entropy decoder is configured to select a mapping information, for deriving the decoded audio information from the encoded audio information, in dependence on the context; and wherein the context-based entropy decoder comprises a context resetter configured to reset the context for selecting the mapping information to a default context, which default context is independent from the previously-decoded audio information, in response to a side information of the encoded audio information.

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Claim 6:
6. The audio decoder according to claim 1 , wherein the audio decoder is configured to receive, as the side information for resetting the context, a one-bit context reset flag per audio frame of the encoded audio information; wherein the audio decoder is configured to receive an encoded audio information comprising a plurality of sets of spectral values per audio frame; wherein the context-based entropy decoder is configured to decode the entropy-encoded audio information of a subsequent set of spectral values of a given audio frame in dependence on a context, which context is based on a previously-decoded audio information of a preceding set of spectral values of the given audio frame, in a non-reset state of operation; and wherein the context resetter is configured to reset the context to the default context before a decoding of a first set of spectral values of the given audio frame and between a decoding of any two subsequent sets of spectral values of the given audio frame in response to the one-bit context reset flag, such that an activation of the one-bit context reset flag of the given audio frame causes a multiple-time resetting of the context when decoding the multiple sets of spectral values of the audio frame.