Patent ID: 11900954
Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. The method according to claim 12, wherein performing LTP filtering comprises:
performing tracing by using the any one subframe as a starting point according to the pitch lag of the any one subframe in response to determining that the pitch lag of the any one subframe is greater than or equal to a threshold, and using a sample point obtained by the tracing as a historical sample point; and
performing LTP filtering according to the excitation signal of the target voice frame, the LTP coefficient of the any one subframe, and the historical sample point, to obtain the LTP filtering result of the any one subframe; and
the method further comprises:
skipping the operation of performing the LTP filtering on the any one subframe in response to determining that the pitch lag of the any one subframe is less than the threshold.