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Abstract

FIELD: data processing.SUBSTANCE: group of inventions relates to audio information encoding/decoding audio techniques. Disclosed is an audio decoder for providing decoded audio information based on encoded audio information. Audio decoder comprises an arithmetic decoder and frequency-domain to time domain converter. Arithmetic decoder is designed to provide a plurality of decoded spectral values based on an arithmetically encoded representation of spectral values. Arithmetic decoder is configured to select a mapping rule describing mapping of a code value onto a symbol code depending on numerical value of current context which describes current state of context. Arithmetic decoder is also configured to determine numeric value of current context depending on a plurality of previously decoded spectral values.EFFECT: high efficiency of encoding/decoding audio information.15 cl 48 dwg

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4G,3G	06/03/2016	ISLD-201512-009	FRAUNHOFER SOCIETY	S1 TS Number: TS 126 445 Version No: Illustrative part: ---- Release: + -				No	Family Member

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WO2011048099A1	4G,3G	06/03/2016	ISLD-201512-009	FRAUNHOFER SOCIETY	S1 TS Number: TS 126 445 Version No: ---- Section No: ---- Release : ---- + -	Yes	Basis Patent
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