Audio decoder and method for providing a decoded audio information using an error concealment modifying a time domain excitation signal

Abstract

An audio decoder for providing a decoded audio information on the basis of an encoded audio information the audio decoder comprising: an error concealment configured to provide an error concealment audio information for concealing a loss of an audio frame wherein the error concealment is configured to modify a time domain excitation signal obtained for one or more audio frames preceding a lost audio frame in order to obtain the error concealment audio information; wherein the error concealment is configured to obtain an information about an intensity of a deterministic signal component in one or more audio frames preceding a lost audio frame; and wherein the error concealment is configured to compare the information about an intensity of a deterministic signal component in one or more audio frames preceding a lost audio frame with a threshold value to decide whether to input a deterministic time domain excitation signal with the addition of a noise like time domain excitation signal into an LPC synthesis or whether to input only a noise time domain excitation signal into the LPC synthesis.

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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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