Patent ID: 11961526
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 17:
18. The apparatus according to claim 12, wherein the processor is further configured to:
calculate the to-be-encoded downmixed signal according to formula DMXi,b(k)=DMXi,b(k)+(1−switch_fade_factor)*DMX_compi,b(k); and
calculate the to-be-encoded residual signal according to formula RESi,b(k)=switch fade factor RES′i,b(k); wherein
DMXi,b(k) represents the to-be-encoded downmixed signal of a subband b in a subframe i in the current frame; DMXi,b(k) represents an initial downmixed signal of the subband b in the subframe i in the current frame; switch_fade_factor represents the switch fade-in/fade-out factor; DMX_compi,b(k) represents a compensated downmixed signal of the subband b in the subframe i in the current frame; RES′i,b(k) represents an initial residual signal of the subband b in the subframe i in the current frame; RESi,b(k) represents the to-be-encoded residual signal of the subband b in the subframe i in the current frame; the subband b in the subframe i in the current frame is a subband in the at least one subband corresponding to the preset frequency band; k represents a frequency bin index of the subband b in the subframe i in the current frame; and 0≤i≤P−1, where P represents a quantity of subframes included in the current frame.