公开(公告)号：US12002483B2

公开(公告)日：2024-06-04

申请号：US17722751

申请日：2022-04-18

Applicant: Meta Platforms Technologies, LLC

Inventor： Gongqiang Yu ,  Michael Smedegaard ,  Tetsuro Oishi

IPC: G10L21/0232 ,  G10L25/18 ,  H04R1/40 ,  H04R3/00 ,  H04R3/04 ,  H04R29/00 ,  G10L21/0216

CPC classification number: G10L21/0232 ,  G10L25/18 ,  H04R1/406 ,  H04R3/005 ,  H04R3/04 ,  H04R29/005 ,  G10L2021/02166 ,  H04R2410/01 ,  H04R2410/07

Abstract: The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period, determine a coherence between the signals, and determine a filter based on the coherence. The filter is configured to reduce wind noise in one or more of the signals.

公开(公告)号：US20230345168A1

公开(公告)日：2023-10-26

申请号：US18085382

申请日：2022-12-20

Applicant: Meta Platforms Technologies, LLC

Inventor： Limin Zhou ,  Simon Porter ,  Gongqiang Yu

IPC: H04R1/10 ,  H04R1/34

CPC classification number: H04R1/1083 ,  H04R1/34

Abstract: An acoustic device with a manifold architecture is described. The acoustic device includes a primary waveguide and a manifold. The primary waveguide has a first end, coupled to an acoustic sensor, and a second end, a port open to a local area. The port receives airflow from the local area that includes sound pressure waves from a sound source and turbulent pressure waves. The sound pressure waves and a first portion of the turbulent pressure waves are detected by the acoustic sensor. The manifold includes a plurality of waveguides that are coupled to a portion of the primary waveguide between the first end and second end. The plurality of waveguides has openings to the local area. The manifold vents a second portion of the turbulent pressure waves through the openings, and the second portion of the turbulent pressure waves is larger than the first portion of the turbulent pressure waves.

公开(公告)号：US12200429B2

公开(公告)日：2025-01-14

申请号：US18085382

申请日：2022-12-20

Applicant: Meta Platforms Technologies, LLC

Inventor： Limin Zhou ,  Simon Porter ,  Gongqiang Yu

IPC: H04R1/10 ,  H04R1/34

Abstract: An acoustic device with a manifold architecture is described. The acoustic device includes a primary waveguide and a manifold. The primary waveguide has a first end, coupled to an acoustic sensor, and a second end, a port open to a local area. The port receives airflow from the local area that includes sound pressure waves from a sound source and turbulent pressure waves. The sound pressure waves and a first portion of the turbulent pressure waves are detected by the acoustic sensor. The manifold includes a plurality of waveguides that are coupled to a portion of the primary waveguide between the first end and second end. The plurality of waveguides has openings to the local area. The manifold vents a second portion of the turbulent pressure waves through the openings, and the second portion of the turbulent pressure waves is larger than the first portion of the turbulent pressure waves.

公开(公告)号：US11758319B2

公开(公告)日：2023-09-12

申请号：US17665375

申请日：2022-02-04

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Limin Zhou ,  Gongqiang Yu ,  Alan Ng

IPC: H04R1/34 ,  H04R1/10

CPC classification number: H04R1/342 ,  H04R1/1091 ,  H04R2410/07

Abstract: An acoustic sensor includes port architecture designed to mitigate wind noise. The acoustic sensor includes a primary waveguide having two ports open to a local area surrounding the acoustic sensor. One opening of a secondary waveguide is coupled to portion of the primary waveguide, with another opening of the secondary waveguide coupled to a microphone. The secondary waveguide has a smaller cross-section than the primary waveguide. Hence, airflow is directed from a port of the primary waveguide to the other port of the primary waveguide and back into the local area, bypassing the microphone.

公开(公告)号：US20230254637A1

公开(公告)日：2023-08-10

申请号：US17665375

申请日：2022-02-04

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Limin Zhou ,  Gongqiang Yu ,  Alan Ng

IPC: H04R1/34 ,  H04R1/10

CPC classification number: H04R1/342 ,  H04R1/1091 ,  H04R2410/07

Abstract: An acoustic sensor includes port architecture designed to mitigate wind noise. The acoustic sensor includes a primary waveguide having two ports open to a local area surrounding the acoustic sensor. One opening of a secondary waveguide is coupled to portion of the primary waveguide, with another opening of the secondary waveguide coupled to a microphone. The secondary waveguide has a smaller cross-section than the primary waveguide. Hence, airflow is directed from a port of the primary waveguide to the other port of the primary waveguide and back into the local area, bypassing the microphone.