公开(公告)号：US10721562B1

公开(公告)日：2020-07-21

申请号：US16399961

申请日：2019-04-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Liyang Rui ,  Govind Kannan

IPC: H04R3/00 ,  G10L21/02 ,  G10K11/16 ,  H04R3/04 ,  G10L25/06 ,  G10L21/0232 ,  G10L21/0264 ,  H04R5/04

Abstract: Systems and methods include a wind detector to receive audio input signals and output a wind detection flag including a single channel wind detection flag and a cross channel wind detection flag, each wind detection flag indicating a presence or absence of wind noise, and a fusion smoothing module to receive the plurality of wind detection flags and generate an output wind detection flag. Microphones generate the plurality of audio input signals. The wind detector and the fusion smoothing module may comprise program instructions stored in the memory for execution by a digital signal processor. The wind detector is a single channel detector to receive a single audio channel of the audio input signal and generate the single channel wind noise flag, and a cross-channel detector to compute auto correlations and a cross correlation between two or more audio channels.

公开(公告)号：US10714073B1

公开(公告)日：2020-07-14

申请号：US16399980

申请日：2019-04-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Liyang Rui ,  Govind Kannan

IPC: G10K11/178 ,  H04R1/10

Abstract: Active noise cancellation (ANC) systems and methods include a reference sensor to sense external noise and generate a reference signal, an error sensor to sense noise in a noise cancellation zone and generate an error signal, a feedforward ANC subsystem to receive the reference and error signals and generate a first anti-noise signal to cancel external noise in a noise cancellation zone, a feedback ANC subsystem to receive the error signal and generate a second anti-noise signal to cancel the external noise in the cancellation zone, a wind detector to detect whether wind noise is present in the reference signal and output a wind noise detection status, and wind handler to control adaptation processing of the feedforward ANC subsystem and the feedback ANC subsystem in accordance with the wind noise detection status and mixing of the first and second anti-noise signals to generate an output anti-noise signal.