Patent ID: 11887607
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A stereo encoding method, comprising:
performing downmix processing on a first left channel signal of a first frame and a first right channel signal of the first frame, to obtain a first primary channel signal of the first frame and a first secondary channel signal of the first frame;
determining that a first frame structure similarity value between the first primary channel signal and the first secondary channel signal falls within a preset frame structure similarity interval;
in response to determining that the first frame structure similarity value falls within the frame structure similarity interval, performing differential encoding on a first pitch period of the first secondary channel signal using an estimated pitch period value of the first primary channel signal, to obtain a first pitch period index value of the first secondary channel signal; and
generating a to-be-sent stereo encoded bitstream according to the first pitch period index value of the first secondary channel signal.