Patent ID: 11894007
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. An audio signal encoder, comprising:
a memory configured to store program instructions; and
one or more processors coupled to the memory and configured to execute the program instructions to cause the audio signal encoder to be configured to:
determine a value of an initial pitch lag candidate of a current frame of a signal in a range from a second minimum pitch limitation to a first minimum pitch limitation using a time domain pitch detection technique, wherein a value of the second minimum pitch limitation is less than a value of the first minimum pitch limitation, and wherein the signal is a speech signal or an audio signal;
determine whether the current frame lacks low-frequency energy; and
determine the initial pitch lag candidate as a final pitch lag when one or more conditions are met, wherein the one or more conditions comprise that the current frame lacks the low-frequency energy.