Manifold architecture for wind noise abatement
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.
1. An acoustic device comprising:
a primary waveguide having a first end and a second end, the first end including an acoustic sensor, and the second end including a port opened to a local area, wherein the primary waveguide is configured to direct airflow from the local area that includes sound pressure waves from a sound source and turbulent pressure waves; wherein the sound pressure waves and a first portion of the turbulent pressure waves are detected by the acoustic sensor; and
a manifold including one or more secondary waveguides coupled to a portion of the primary waveguide between the first end and the second end, wherein the one or more secondary waveguides have openings to the local area, and are configured to direct a second portion of turbulent pressure waves away from the acoustic sensor, and wherein the second portion of the turbulent pressure waves is larger than the first portion of the turbulent pressure waves.
2. The acoustic device of claim 1 , wherein the one or more secondary waveguides of the manifold each include a first segment and a second segment.
3. The acoustic device of claim 2 , wherein the first segment of each secondary waveguide of the manifold further comprises:
a first end, wherein the first end is coupled to an internal opening of the primary waveguide; and
a second end, wherein the second end is coupled to an opening of the second segment of the secondary waveguide.
4. The acoustic device of claim 3 , wherein the first segment of each secondary waveguide is coupled to the primary waveguide at a an angle.
5. The acoustic device of claim 2 , wherein the second segment of each secondary waveguide of the manifold further comprises:
a first end, wherein the first end is coupled to the second end of the first segment of the secondary waveguide; and
a second end, wherein the second end opens to the local area.
6. The acoustic device of claim 5 , wherein the second segment of each secondary waveguide is coupled to the first segment of the secondary waveguide at an angle.
7. The acoustic device of claim 2 , wherein each secondary waveguide of the manifold has a gradually increasing cross-sectional diameter from the first end of the first segment to the second end of the second segment.
8. The acoustic device of claim 1 , wherein a total cross-sectional area of the manifold is larger than a cross-sectional area of the primary waveguide.
9. A headset comprising:
a frame;
one or more display elements each coupled to the frame, each display element configured to display content; and
an acoustic device coupled to the frame, the acoustic device comprising:
a primary waveguide having a first end and a second end, the first end including an acoustic sensor, and the second end including a port opened to a local area, wherein the primary waveguide is configured to direct airflow from the local area that includes sound pressure waves from a sound source and turbulent pressure waves; wherein the sound pressure waves and a first portion of the turbulent pressure waves are detected by the acoustic sensor; and
a manifold including one or more secondary waveguides coupled to a portion of the primary waveguide between the first end and the second end, wherein the secondary waveguides have openings to the local area, configured to direct a second portion of turbulent pressure waves away from the acoustic sensor, and these second portion of the turbulent pressure waves is larger than the first portion of the turbulent pressure waves.
10. The headset of claim 9 , wherein the one or more secondary waveguides of the manifold each include a first segment and a second segment.
11. The headset of claim 10 , wherein the first segment of each secondary waveguide of the manifold further comprises:
a first end, wherein the first end is coupled to an internal opening of the primary waveguide; and
a second end, wherein the second end is coupled to an opening of the second segment of the secondary waveguide.
12. The headset of claim 11 , wherein the first segment of each secondary waveguide of the manifold is coupled to the primary waveguide at an angle.
13. The headset of claim 10 , wherein the second segment of each secondary waveguide of the manifold further comprises:
a first end, wherein the first end is coupled to the second end of the first segment of the secondary waveguide; and
a second end, wherein the second end opens to a local area.
14. The headset of claim 11 , wherein the second segment of each secondary waveguide is coupled to the first segment of the secondary waveguide at an angle.
15. The headset of claim 11 , wherein the second segment of each secondary waveguide has a gradually increasing cross-sectional diameter from the first end to the second end.
16. The headset of claim 9 , wherein a total cross-sectional area of the manifold is larger than a cross-sectional area of the primary waveguide.
17. An audio system comprising:
a sensor array including one or more acoustic devices, an acoustic device comprising:
a primary waveguide having a first end and a second end, the first end including an acoustic sensor, and the second end including a port opened to a local area, wherein the primary waveguide is configured to direct airflow from the local area that includes sound pressure waves from a sound source and turbulent pressure waves; wherein the sound pressure waves and a first portion of the turbulent pressure waves are detected by the acoustic sensor; and
a manifold including one or more secondary waveguides coupled to a portion of the primary waveguide between the first end and the second end, wherein the secondary waveguides have openings to the local area, configured to direct a second portion of turbulent pressure waves away from the acoustic sensor, and these second portion of the turbulent pressure waves is larger than the first portion of the turbulent pressure waves; and
an audio controller coupled to the sensor array, the audio controller configured to localize one or more sound sources in the local area based on audio captured by the one or more acoustic sensors of the sensor array.
18. The audio system of claim 17 , wherein the one or more secondary waveguides of the manifold each include a first segment and a second segment.
19. The audio system of claim 18 , wherein the first segment of each secondary waveguide of the manifold further comprises:
a first end, wherein the first end is coupled to an internal opening of the primary waveguide; and
a second end, wherein the second end is coupled to an opening of the second segment of the secondary waveguide.
20. The audio system of claim 19 , wherein the first segment of each secondary waveguide of the manifold is coupled to the primary waveguide at an angle.