Patent ID: 11887618
Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The method according to claim 8, wherein the determining, for each subband in each of the audio frames, the voice presence probability comprises:
using, for a current subband in a current frame currently processed in the audio frames, a quotient of a subband smooth power spectrum and a noise initial value of the current subband as a power ratio of the current subband in the current frame;
using a first value as a voice presence value corresponding to the current subband in the current frame when the power ratio is greater than a preset threshold;
using a second value as the voice presence value corresponding to the current subband in the current frame when the power ratio is less than or equal to the preset threshold, the second value being less than the first value;
obtaining, in a historical frame previous to the current frame, a voice presence probability of a historical subband corresponding to a same subband number with the current subband; and
determining a voice presence probability corresponding to the current subband in the current frame according to the voice presence probability corresponding to the historical subband and the voice presence value corresponding to the current subband.