US 11,758,319 B2
Microphone port architecture for mitigating wind noise
Limin Zhou, Redmond, WA (US); Gongqiang Yu, Redmond, WA (US); and Alan Ng, Seattle, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed on Feb. 4, 2022, as Appl. No. 17/665,375.
Prior Publication US 2023/0254637 A1, Aug. 10, 2023
Int. Cl. H04R 1/34 (2006.01); H04R 1/10 (2006.01)
CPC H04R 1/342 (2013.01) [H04R 1/1091 (2013.01); H04R 2410/07 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An acoustic sensor comprising:
a primary waveguide having a port opened to a local area surrounding the acoustic sensor and an additional port opened to the local area surrounding the acoustic sensor, the primary waveguide configured to direct airflow from the port to the additional port; and
a secondary waveguide having a smaller cross-section than the primary waveguide and having a first opening coupled to an internal opening of the primary waveguide and a second opening coupled to a microphone configured to capture audio from the local area, the secondary waveguide configured to direct audio from the local area to the microphone.