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Wind noise rejection apparatus

A sound and microphone technology, applied in the field of wind noise suppression devices, can solve the problems of bulkiness, increased microphone cost, complex signal processing equipment, etc.

Inactive Publication Date: 2008-05-21
AUDIOGRAVITY HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These proposed solutions often require the use of complex signal processing equipment, which very significantly increases the cost of the microphone
Simple solutions such as some kind of windshield for microphones have also been proposed, which are effective, however, they are very bulky

Method used

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  • Wind noise rejection apparatus
  • Wind noise rejection apparatus
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Embodiment Construction

[0010] Embodiments of the invention include at least three bidirectional sensor elements. A bidirectional sensor element refers to an element having front and rear ports in a housing and a diaphragm of a sensor disposed in the housing so that the diaphragm is affected by sound waves entering the housing through the front and rear ports. For one embodiment of the invention, the elements are ideally positioned relative to each other such that their front ports are equidistant from the desired sound source and the projection of each element's central axis forms a unique angle at the back port. In one such arrangement, the elements may be located on the surface of an imaginary sphere such that they are an equal distance from the desired sound source. The sensitivities of the front ports of the bidirectional microphones overlap as much as possible, while the sensitivities of the rear ports overlap as little as possible, as shown in FIG. 3 . The desired sound source is generally lo...

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Abstract

An apparatus for reduction of wind noise comprised of an electro-acoustic transducer arrangement with at least three bi-directional transducer elements disposed in three dimensions at an angle to each other and pointing towards a common sound source. The exposed structure is covered with a thin layer of acoustic-resistive material. The electrical outputs of the elements are added together to provide an output signal with increased signal to noise ratio.

Description

technical field [0001] The present invention relates to the use of electro-acoustic transducers and in particular to an arrangement in the case of a microphone in combination with an electronic circuit to reduce the influence of wind noise. Background technique [0002] The problem of wind noise with microphones is well known and many solutions have been proposed. These proposed solutions often require the use of complex signal processing equipment, which increases the cost of the microphone very significantly. Simple solutions such as some kind of windshield for the microphone have also been proposed, which are effective, however, they are very bulky. Contents of the invention [0003] The present invention provides an electroacoustic sensor arrangement comprising three or more bidirectional sensor elements arranged at an angle to each other in three-dimensional space and generally all directed towards a common sound source. The outputs of these elements are summed toge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/40
Inventor 戴维·赫尔曼
Owner AUDIOGRAVITY HLDG