| 摘要 |
A method and an apparatus for encoding and decoding a multi-channel audio signal are provided to perform the up-mixing of decoded core audio data by using decoded residual coding data, thereby decoding core audio data and residual coding data in the same decoding type to reduce the complexity of a decoder. A method for encoding and decoding a multi-channel audio signal comprises the following steps of: detecting a type of space extension data included in the encoding result of the audio signal(700); detecting a core audio object type when the space extension data is data indicating the core audio object type in which core audio data is encoded(710); decoding the core audio data in a decoding type according to the detected core audio object type(720); decoding residual coding data in the decoding type according to the core audio object type when the space extension data is residual coding data(730); and up-mixing the decoded core audio data by using the decoded residual coding data(740). |
