Patent attributes
An apparatus and method for receiving a downmix signal including at least one object signal, and a bitstream including object information and downmix channel level difference. When the downmix signal includes at least two object signals, a relation identifier indicating whether two object signals are related is extracted, and whether the two object signals correspond to stereo object signals is identified 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. Further, the first element is applied to the left object signal to output a first channel, the second element is applied to the right object signal to output a second channel, and the first element is conversely related to the second element.
