Apparatus for processing an audio signal and method thereof

摘要

An apparatus for processing an audio signal and method thereof are disclosed. The present invention includes receiving a downmix signal and side information; extracting control restriction information from the side information; receiving control information for controlling gain or panning at least one object signal; generating at least one of first multi-channel information and first downmix processing information based on the control information and object information, without using the control restriction information; and, generating an output signal by applying the at least one of the first multichannel information and the first downmix processing information to the downmix signal, wherein the control restriction information relates to a parameter indicating limiting degree of the control information.

主权项

1. A method for processing an audio signal, comprising:
receiving a downmix signal and side information; extracting downmix gain information, control restriction information and off-enable information from the side information, wherein the downmix gain information indicates a gain applied to each object when the each object is downmixed; receiving control information for controlling gain or panning at least one object signal; generating downmix matrix using the downmix gain information; generating at least one of first multi-channel information and first downmix processing information based on at least of the off-enable information, the control information, object information, the control restriction information and the downmix matrix; and generating an output signal by applying the at least one of the first multichannel information and the first downmix processing information to the downmix signal, wherein the control restriction information relates to a parameter indicating limiting degree of the control information, wherein the off-enable information indicates whether the control restriction information must be used or may be used selectively.