Patent ID: 11922954
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The device of claim 9, wherein the first-type frame comprises a downmixed signal and a stereo parameter set, wherein the second-type frame comprises the stereo parameter set and does not comprise a downmixed signal, and wherein the decoder is further configured to:
obtain an Nth-frame stereo parameter set after the decoder decodes the Nth-frame bitstream and when the Nth-frame bitstream is the first-type frame;
decode the Nth-frame bitstream to obtain the Nth-frame stereo parameter set when the Nth-frame bitstream is the second-type frame; and
restore, based on a predetermined third algorithm, the Nth-frame downmixed signal to Nth-frame audio signals using a stereo parameter in the Nth-frame stereo parameter set.