METHOD, MEDIUM, AND APPARATUS ENCODING AND/OR DECODING MULTICHANNEL AUDIO SIGNALS

摘要

A method, medium, and apparatus encoding and/or decoding a multichannel audio signal. The method includes detecting the type of spatial extension data included in an encoding result of an audio signal, if the spatial extension data is data indicating a core audio object type related to a technique of encoding core audio data, detecting the core audio object type; decoding core audio data by using a decoding technique according to the detected core audio object type, if the spatial extension data is residual coding data, decoding the residual coding data by using the decoding technique according to the core audio object type, and up-mixing the decoded core audio data by using the decoded residual coding data. According to the method, the core audio data and residual coding data may be decoded by using an identical decoding technique, thereby reducing complexity at the decoding end.

主权项

1. A multi-channel decoding method comprising:
decoding a mono down-mixed signal; decoding a residual signal; decoding spatial information, based on information indicating whether a residual coding is applied; and reconstructing a plurality of channel signals by upmixing the decoded mono down-mixed signal and the decoded residual signal based on the decoded spatial information.