An encoding method and apparatus and a decoding method and apparatus are provided. The decoding method includes extracting a compatible down-mix signal optimized for a first multi-channel decoder from the input bitstream, converting the compatible down-mix signal to be optimized for a second multi-channel signal by performing a compatibility processing operation on the compatible down-mix signal, and generating a three-dimensional (3D) down-mix signal by performing a 3D rendering operation on the converted down-mix signal. Accordingly, it is possible to efficiently encode multi-channel signals with 3D effects and to adaptively restore and reproduce audio signals with optimum sound quality according to the characteristics of an audio reproduction environment.
申请公布号
WO2007091850(A1)
申请公布日期
2007.08.16
申请号
WO2007KR00677
申请日期
2007.02.07
申请人
LG ELECTRONICS INC.;JUNG, YANG WON;PANG, HEE SUK;OH, HYUN O;KIM, DONG SOO;LIM, JAE HYUN