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

Claim 18:
19. A call audio mixing processing apparatus, comprising:
processing circuitry configured to:
obtain call audio streams from terminals of call members participating in a call;
perform voice analysis on the call audio streams to determine voice activity corresponding to each of the terminals, the voice activity of the terminals indicating activity levels of the call members participating in the call;
determine, according to the voice activity of the terminals, respective voice adjustment parameters corresponding to the terminals;
adjust, according to the respective voice adjustment parameters corresponding to the terminals, the call audio streams of the terminals; and

perform mixing processing on the adjusted call audio streams to obtain a mixed audio stream, wherein
the call audio streams are divided into audio frames, and
the voice analysis performed on a call audio stream of the call audio streams is based on (i) a minimum value of a plurality of subband power spectra of a same subband in the audio frames of the call audio stream and (ii) a voice presence probability for the same subband in each of the audio frames of the call audio stream, the voice presence probability for the same subband in the respective audio frame being determined according to the one of the plurality of subband power spectra of the same subband in the respective audio frame and the minimum value of the plurality of subband power spectra of the same subband.