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

Claim 0:
1. A noise reduction method, comprising:
obtaining different audio signals respectively collected by two audio collection devices, wherein one of the two audio collection devices has a specific positional relationship with an effective audio source;
at least according to the different audio signals respectively collected by the two audio collection devices, determining effective signals corresponding to the effective audio source and noise signals corresponding to a noise source and obtaining determination results, wherein determining the effective signals and the noise signals corresponding to the noise source includes:
determining one group of audio signals corresponding to each audio source from the different audio signals respectively collected by the two audio collection devices, wherein each group of audio signals includes different audio signals generated by a corresponding audio source in the two audio collection devices respectively; and
determining a target group of audio signals based on each group of audio signals, the target group of audio signals being the effective signals corresponding to the effective audio source, and determining the target group of audio signals including:
determining the target group of audio signals with a largest amplitude variation between the audio signals collected by the two audio collection devices in each group of audio signals; and

performing a noise reduction process on the audio signals collected by at least one of the two audio collection devices to retain the effective signals and reduce the noise signals, according to the determination results.