| 摘要 |
The present invention relates to an apparatus for processing an audio signal and method thereof. The present invention includes receiving a downmix signal comprising at least one object signal, and a bitstream including object information and downmix channel level difference, when the downmix signal comprises at least two object signals, extracting a relation identifier from the bitstream, the relation identifier indicating whether two object signals among the at least two object signals are related to each other, identifying whether the two object signals correspond to stereo object signals, using the downmix channel level difference and the relation identifier, generating mix information including a first element and a second element using a single user input, and generating at least one of downmix processing information and multi channel information based on the object information and the mix information, wherein the stereo object signals includes a left object signal and a right object signal, the first element is applied to the left object signal of the stereo object signal to output a first channel, the second element is applied to the right object signal of the stereo object signal to output a second channel, and the first element is negatively related to the second element. Accordingly, the present invention is able to identify whether an output signal is a stereo object signal using a relation identifier and a DCLD. |
