Patent ID: 8588947

Claim:
A method for processing an audio signal by an apparatus, the method comprising: receiving, by the apparatus, a first audio signal and first object information from a first terminal; receiving, by the apparatus, a second audio signal and second object information from a second terminal; receiving, by the apparatus, a third audio signal and third object information from a third terminal; when destination information designating at least one non-recipient terminal among multiple terminals including the second terminal and the third terminal is received from the first terminal, generating, by the apparatus, a designated object information for the at least one non-recipient terminal by combining multiple object information without the first object information according to the destination information, and generating, by the apparatus, a designated downmix signal for the at least one non-recipient terminal by combining multiple downmix signals without the first audio signal according to the destination information; and when the designated object information is generated, transmitting, by the apparatus, the designated object information and the designated downmix signal to the at least one non-recipient terminal among the multiple terminals, wherein the designated object information includes at least one of object level information, object correlation information, downmix gain information, downmix channel level difference, and absolute object energy information, wherein the designated object information is used to generate downmix processing information with mix information, wherein the mix information is transmitted to the at least one non-recipient terminal for controlling a position or panning of objects in the designated downmix signal, and wherein the designated downmix signal is processed with the generated downmix processing information.