Patent ID: 11961501
Assignee: LENOVO (BEIJING) LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 4:
5. The method according to claim 1, wherein performing the noise reduction process on the audio signals collected by the at least one of the two audio collection devices to retain the effective signals and reduce the noise signals according to the determination results includes:
performing a time alignment process on the different audio signals respectively collected by the two audio collection devices;
performing an inversion process on waveforms of second audio signals after the time alignment process, to obtain the second audio signals in an inverted waveform form; and
performing a waveform superposition process on the second audio signals in the inverted waveform form and first audio signals, to obtain target audio signals;
wherein:
the first audio signals and the second audio signals are different audio signals respectively collected by the two audio collecting devices, and the effective signals in the first audio signals have higher amplitude than the effective signals in the second audio signals.