Patent ID: 8958566
Filing Date: 2015-02-17
Classification: G10H,G10L,H04S

Abstract:
1. An audio signal decoder for providing an upmix signal representation in dependence on a downmix signal representation and an object-related parametric information, the audio signal decoder comprising: an object separator configured to decompose the downmix signal representation, to provide a first audio information describing a first set of one or more audio objects of a first audio object type, and a second audio information describing a second set of one or more audio objects of a second audio object type in dependence on the downmix signal representation and using at least a part of the object-related parametric information, wherein the second audio information is an audio information describing the audio objects of the second audio object type in a combined manner; an audio signal processor configured to receive the second audio information and to process the second audio information in dependence on the object-related parametric information, to acquire a processed version of the second audio information; and an audio signal combiner configured to combine the first audio information with the processed version of the second audio information, to acquire the upmix signal representation; wherein the audio signal decoder is configured to provide the upmix signal representation in dependence on a residual information associated to a subset of audio objects represented by the downmix signal representation, wherein the object separator is configured to decompose the downmix signal representation to provide the first audio information describing the first set of one or more audio objects of the first audio object type to which residual information is associated, and the second audio information describing the second set of one or more audio objects of the second audio object type, to which no residual information is associated, in dependence on the downmix signal representation and using the residual information; and wherein the audio signal processor is configured to process the second audio information, to perform an object-individual processing of the audio objects of the second audio object type, taking into consideration object-related parametric information associated with more than two audio objects of the second audio object type; and wherein the residual information describes a residual distortion, which is expected to remain if an audio object of the first audio object type is isolated merely using the object-related parametric information, wherein the audio signal decoder is implemented using a hardware apparatus, or using a computer, or using a combination of a hardware apparatus and a computer.