Patent ID: 11935547
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 5:
6. The non-transitory computer-readable medium according to claim 1, wherein determining the coding mode of the current frame based on the channel combination scheme for the previous frame and the channel combination scheme for the current frame comprises:
when the channel combination scheme for the previous frame is the correlated signal channel combination scheme, and the channel combination scheme for the current frame is the anticorrelated signal channel combination scheme, determining that the coding mode of the current frame is a correlated-to-anticorrelated signal coding switching mode, wherein in the correlated-to-anticorrelated signal coding switching mode, time-domain downmix processing is performed by using a downmix processing method corresponding to a transition from the correlated signal channel combination scheme to the anticorrelated signal channel combination scheme; or
when the channel combination scheme for the previous frame is the anticorrelated signal channel combination scheme, and the channel combination scheme for the current frame is the anticorrelated signal channel combination scheme, determining that the coding mode of the current frame is the anticorrelated signal coding mode, wherein in the anticorrelated signal coding mode, the time-domain downmix processing is performed by using a downmix processing method corresponding to the anticorrelated signal channel combination scheme; or
when the channel combination scheme for the previous frame is the anticorrelated signal channel combination scheme, and the channel combination scheme for the current frame is the correlated signal channel combination scheme, determining that the coding mode of the current frame is an anticorrelated-to-correlated signal coding switching mode, wherein in the anticorrelated-to-correlated signal coding switching mode, the time-domain downmix processing is performed by using a downmix processing method corresponding to a transition from the anticorrelated signal channel combination scheme to the correlated signal channel combination scheme; or
when the channel combination scheme for the previous frame is the correlated signal channel combination scheme, and the channel combination scheme for the current frame is the correlated signal channel combination scheme, determining that the coding mode of the current frame is the correlated signal coding mode, wherein in the correlated signal coding mode, the time-domain downmix processing is performed by using a downmix processing method corresponding to the correlated signal channel combination scheme.