| 摘要 |
An apparatus and a method for processing an audio signal are provided to control gain and panning of objects without limitation, and prevent the distortion of sound quality due to gain control even when the number of independent objects is two or more. An object encoder(110) generates object information by using one or more objects. An enhanced object encoder(120) generates enhanced object information and down-mix information. A multiplexer(130) multiplexes the object information and the enhanced object information to generate an additional information bit stream. A demultiplexer(210) of a decoder(200) extracts the object information and the enhanced object information from the additional information bit stream. An information generator(220) generates multi-channel information and down-mix processing information by using the object information and the enhanced object information. A down-mix processing unit(230) processes the down-mix information by using the down-mix processing information. A multi-channel decoder(240) receives the processed down-mix information, and up-mixes the processed down-mix information by using the multi-channel information, thereby generating a multi-channel signal. |
