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.
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. 10. The audio decoder according to claim 1 , wherein the audio decoder is configured to receive an encoded audio information comprising a plurality of sets of spectral values per audio frame; and wherein the audio decoder is configured to also receive a grouping side information; and wherein the audio decoder is configured to group two or more of the sets of spectral values for a combination with a common scale factor information in dependence on the grouping side information; wherein the context resetter is configured to reset the context to the default context in response to the grouping side information; and wherein the context resetter is configured to reset the context between a decoding of sets of spectral values of subsequent groups, and to avoid to reset the context between a decoding of sets of spectral values of a single group.