Wind noise reduction filter
US-9294829-B2 · Mar 22, 2016 · US
Acoustic measurement device in an air flow
US9557211B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9557211-B2 |
| Application number | US-201514604224-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 23, 2015 |
| Priority date | Feb 18, 2014 |
| Publication date | Jan 31, 2017 |
| Grant date | Jan 31, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
An acoustic measurement device in an air flow and subjected to a noise source, the device including: a base having a surface in contact with the air flow, a first microphone which is mounted flush with the surface, a second and a third microphone which are mounted on either side of the first microphone, each, at the bottom of a cavity opening onto the surface, and where each of the second and third microphones is covered with a noise-reducing element, the second and the third microphones being assembled at a distance from the first microphone that is greater than the correlation length of the turbulent phenomenon in the frequency band studied, and a computer or processor provided for computing the power spectrum of the noise source from the signals detected by the three microphones.
First claim
Opening claim text (preview).
The invention claimed is: 1. An acoustic measurement device for use in an air flow and for being subjected to a noise source, the device comprising: a base having a surface in contact with the air flow; a first microphone which is mounted flush with the surface; second and third microphones mounted on either side of the first microphone, each at a bottom of a cavity which opens onto the surface, wherein each of the second and third microphones is covered with a noise-reducing element, the second and the third microphones being assembled at a distance from the first microphone that is greater than a correlation length of a turbulent phenomenon in a frequency band studied, and a computer configured for computing a power spectrum of the noise source from signals detected by the three microphones. 2. The device according to claim 1 , wherein the second and third microphones are arranged on either side of a line running through a center of the first microphone and which is parallel with a direction of flow. 3. The device according to claim 1 , wherein each cavity has a shape of a cone, a base of which is flush with the surface and an axis of which is perpendicular to the surface.
Assignees
Inventors
Classifications
Acoustic transducers and sound field adaptation in vehicles · CPC title
Operations & Transport · mapped topic
- G01H3/00Primary
Measuring {characteristics of} vibrations by using a detector in a fluid (G01H7/00, G01H9/00, G01H11/00 take precedence) · CPC title
- G01H3/10Primary
Amplitude; Power · CPC title
Mouthpieces; {Microphones;} Attachments therefor · CPC title
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- What does patent US9557211B2 cover?
- An acoustic measurement device in an air flow and subjected to a noise source, the device including: a base having a surface in contact with the air flow, a first microphone which is mounted flush with the surface, a second and a third microphone which are mounted on either side of the first microphone, each, at the bottom of a cavity opening onto the surface, and where each of the second and t…
- Who is the assignee on this patent?
- Airbus Operations Sas
- What technology area does this patent fall under?
- Primary CPC classification G01H3/00. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 31 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).