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Hearing-aid denoising device and method allowable for adjusting denoising degree

A hearing aid, adjustable technology, applied in the direction of hearing aids, electrical components, etc., can solve troubles and other problems, and achieve the effect of improving operational flexibility and experience comfort

Active Publication Date: 2014-05-21
深圳市微纳感知计算技术有限公司
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thus causing great trouble

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  • Hearing-aid denoising device and method allowable for adjusting denoising degree
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  • Hearing-aid denoising device and method allowable for adjusting denoising degree

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] image 3 It is a structural schematic diagram of a hearing aid denoising device 300 with adjustable denoising degree provided by an embodiment of the present invention. The hearing aid denoising device 300 includes a spectral estimation module 302 , a spectral averaging module 304 , a Wiener filtering module 306 , a denoising degree setting module 308 , an endpoint detection (VAD) module 310 , and an inverse fast Fourier transform (IFFT) module 312 .

[0020] The spectrum estimation module 302 is used to overlap and divide the input signal into frames, convert the frame from the time domain...

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Abstract

The invention provides a hearing-aid denoising device and method allowable for adjusting denoising degree. The hearing-aid denoising device allowable for adjusting denoising degree comprises an spectrum estimation module, a spectrum mean value module, an endpoint detection module, a Wiener filtering module, a denoising degree setting module and an inverse fast fourier transform module, wherein the endpoint detection module is used for determining whether a current frame is a voice frame, a sub-voice frame, a sub-noise frame or a noise frame and correspondingly setting marks; the Wiener filtering module is used for performing Wiener filtering operation and obtaining Wiener filtering coefficient; the denoising degree setting module is used for determining noise reduction degree according to the marks of the endpoint detection module and the Wiener filtering coefficient of the Wiener filtering module; the inverse fast fourier transform module is used for converting a frequency domain of a processed signal to a time domain so as to obtain a denoised signal. By means of the hearing-aid denoising device and method allowable for adjusting denoising degree, a user can control noise strength suppression on the basis of independent choice, and thereby, operating flexibility and comfortable experience levels of the user can be improved.

Description

technical field [0001] The present invention relates to a hearing aid denoising device and method, more particularly to a hearing aid denoising device and method with adjustable denoising degree. Background technique [0002] With the development of modern technology, digital hearing aids are gradually accepted by more and more hearing-impaired patients due to their powerful signal processing capabilities. However, in noisy environments, hearing aid wearers' intelligibility of speech can be severely reduced. Therefore, the denoising circuit module is particularly important for speech processing of hearing aids. Some commonly used denoising methods include spectral subtraction, Wiener filtering, and subspace speech enhancement methods. The most commonly used method is Wiener filtering, which can remove background noise, white noise, and some musical noise in the environment. . [0003] A commonly used Wiener filtering algorithm is the standard ETSI ES 202 050 V1.1.5 (2007-...

Claims

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Application Information

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IPC IPC(8): H04R25/00
Inventor 薛风杰
Owner 深圳市微纳感知计算技术有限公司
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