Patent ID: 8725279

Claim:
A method for decoding an audio signal, comprising: receiving a downmix signal having at least one independent object and a background object downmixed therein; receiving object information and enhanced object information, wherein the object information includes at least one of level information and correlation information between the at least one independent object and the background object, wherein the enhanced object information includes a residual signal; receiving mix information from a user, the mix information being usable to control gain or panning of the at least one independent object or the background object; generating downmix processing information using the objection information and the enhanced object information; extracting the at least one independent object and the background object from the downmix signal using the object information and the enhanced object information; and suppressing one of the extracted at least one independent object and the background object using at least one of the downmix processing information and the enhanced object information, wherein the enhanced object information is generated during a process of grouping at least one object-based signal into an enhanced object, wherein the at least one independent object corresponds to at least one object-based signal, wherein the background object corresponds to either a signal including at least one channel-based signal or a signal in which at least one channel based signal is downmixed, and wherein the object information and the mix information are usable to generate multi channel information usable to upmix the extracted at least one independent object or the extracted background object.