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Hearing aid adapted for suppression of wind noise

A technology for hearing aids and microphones, applied in hearing aids, hearing aid shells, microphones, etc., can solve the problems of attenuation, large hearing aid volume, and increased acoustics of desired sound, and achieve the effect of suppressing wind noise

Inactive Publication Date: 2013-02-06
WIDEX AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Mechanical construction measures have been suggested to counteract wind noise, but these are often too large or bulky in hearing aid implementation
[0009] Furthermore, this approach often results in increased acoustic attenuation of the desired sound

Method used

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  • Hearing aid adapted for suppression of wind noise
  • Hearing aid adapted for suppression of wind noise
  • Hearing aid adapted for suppression of wind noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] It has been found that hearing aids according to aspects of the invention provide significantly improved wind noise suppression over a wide frequency band.

[0027] It has been found that the ratio of wind noise suppression to acoustic attenuation can be improved by providing a sound transmission channel in the hearing aid that directs sound from the surrounding environment to the microphone inlet, wherein the airflow in the sound transmission channel forms a laminar shape before reaching the microphone inlet.

[0028] It has further been found that hearing aids according to aspects of the invention can improve the ratio of wind noise suppression relative to acoustic attenuation by appropriate selection of the length of the sound transmission channel.

[0029] It has been found that the cross-sectional design of the sound transmission channel can further optimize the ratio of wind noise suppression to acoustic attenuation.

[0030] Consider now a small-diameter duct sui...

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PUM

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Abstract

A hearing aid (100) having a microphone, a signal processing unit, an electrical- acoustical output transducer, a housing (101) and a wind shield cover (102) wherein the housing has a surface with a microphone inlet (112, 113), and the wind shield cover is adapted to be attached to the housing, to cover the microphone inlet, to provide for sound to be guided in a gap between the wind shield cover and the housing, hereby providing for the transmission of sound from the surroundings and to said microphone inlet, wherein a first dimension of a cross-section of the gap is in the range between 0.15 mm and 0.5 mm, and wherein the minimum distance, along the gap, from the microphone inlet and to the opening of the gap, towards the surroundings, is at least 1 mm.

Description

technical field [0001] The present invention relates to hearing aids. More specifically, the present invention relates to hearing aids with wind noise suppression. Background technique [0002] In the context of the present disclosure, a hearing aid system should be understood as a system for alleviating the hearing loss of a hearing impaired user. A hearing aid system may be monaural and include only one hearing aid, or binaural and include two hearing aids. [0003] In the context of this disclosure, a hearing aid should be understood as a small microelectronic device designed to be worn behind or in the ear of a hearing-impaired user. A hearing aid includes one or more microphones, a microelectronic circuit including a signal processor, and an acoustic output transducer. The signal processor is preferably a digital signal processor. Hearing aids are enclosed in housings adapted to fit behind or in the ear. [0004] There are several different hearing aid types. An e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/08H04R25/00
CPCH04R1/086H04R25/65H04R2410/07H04R1/08H04R25/00
Inventor 黎椿键M·J·H·延森M·莫科布吉尔S·克里斯滕森
Owner WIDEX AS
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