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

Claim 4:
5. The method according to claim 4, wherein the determining a closed-loop pitch period reference value of the first secondary channel signal based on an estimated pitch period value of the first primary channel signal and a quantity of subframes of the first secondary channel signal comprises:
determining a closed-loop pitch period integer part loc_T0 of the first secondary channel signal and a closed-loop pitch period fractional part loc_frac_prim of the first secondary channel signal based on the estimated pitch period value; and
calculating the closed-loop pitch period reference value f_pitch_prim of the first secondary channel signal in the following manner:

f_pitch_prim=loc_T0+loc_frac_prim/N; wherein

N represents the quantity of subframes of the first secondary channel signal.