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US 8,712,060 B2Granted
Method and an apparatus for processing an audio signal
AssigneeLG Electronics Inc.
InventorsHyeon O Oh, Yang Won Jung
Life of this patent
Estimating the term…
Abstract
A method and apparatus for processing an audio signal is disclosed. Herein, the method includes receiving a downmix information having at least two independent objects and a background object downmixed therein; separating the downmix information into a first independent object and a temporary background object using a first enhanced object information; and extracting a second independent object from the temporary background object using a second enhanced object information.
Claims18
A method for processing an audio signal, comprising:
- receiving, by a decoding apparatus, a downmix signal having at least two independent objects and a background object downmixed therein, the at least two independent objects including at least a first independent object and a second independent object;
- receiving, by the decoding apparatus, a side information bitstream comprising object parameters and at least two pieces of enhanced object information, the at least two pieces of enhanced object information including at least a first residual and a second residual;
- separating, by the decoding apparatus, the downmix signal into the first independent object and a first temporary background object using the first residual;
- separating, by the decoding apparatus, the first temporary background object into the second independent object and a second temporary background object using the second residual;
- generating downmix processing information to process the downmix signal using the object parameters;
- and
- generating, by the decoding apparatus, a multi-channel audio signal based on at least one of the first independent object, the second independent object, the second temporary background object, and the downmix processing information,
- wherein a number of the at least two pieces of enhanced object information and a number of the at least two independent objects are equal to one another.
5 more elements
An apparatus for processing an audio signal, comprising:
- an information receiving unit configured to receive a downmix signal and a side information bitstream, the downmix signal having at least two independent objects and a background object downmixed therein, the at least two independent objects including at least a first independent object and a second independent object, the side information bitstream comprising object parameters, and at least two pieces of enhanced object information, the at least two pieces of enhanced object information including at least a first residual and a second residual;
- a first enhanced object information decoding unit configured to separate the downmix signal into the first independent object and a first temporary background object using the first residual;
- and
- a second enhanced object information decoding unit configured to separate the first temporary background object into the second independent object and a second temporary background object using the second residual;
- a downmix processing information generating unit configured to generate downmix processing information to process the downmix signal using the object parameters;
- and
- a multi-channel decoding unit configured to generate a multi-channel audio signal based on at least one of the first independent object, the second independent object, the second temporary background object, and the downmix processing information,
- wherein a number of the at least two pieces of enhanced object information and a number of the at least two independent objects are equal to one another.
5 more elements
Dependencies are inferred from the claim text.