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Hearing aid and a method of enhancing speech reproduction

一种助听器、语音的技术，应用在助听器、助听器信号处理、语音分析等方向，能够解决适应速度低、降低适应速度、适应速度不满足要求等问题，达到高可信度的效果

Active Publication Date: 2013-08-21
WIDEX AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accuracy of this system is very high, but because of the complexity of the speech intelligibility index calculation and the characteristics involved, the adaptation speed of this system is low
When the noise level rises, the adaptation speed of the speech clarity noise reduction system is about 1.8-2dB / s, and when the noise level drops it is about 17dB / s. This adaptation speed is not satisfactory, for example, in the presence of modulation noisy sound environment

Method used

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  • Hearing aid and a method of enhancing speech reproduction
  • Hearing aid and a method of enhancing speech reproduction
  • Hearing aid and a method of enhancing speech reproduction

Examples

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Embodiment Construction

[0020] figure 1 A schematic block diagram of a speech detector 10 for use with the present invention is shown in . Speech detector 10 is capable of detecting and distinguishing unvoiced and voiced voice signals from the input signal, and it includes a voiced voice detector 11, an unvoiced voice detector 12, an unvoiced discriminator 26, a voiced discriminator 27, an OR gate 28 and a voice frequency comparison Device 29. Voiced sound detector 11 comprises voice envelope filter module 13, envelope bandpass filter module 14, frequency correlation calculation module 15, characteristic frequency look-up table 16, speech frequency counting module 17, voiced sound frequency detection module 18 and voiced sound probability ( computing) Module 19. The unvoiced sound detector 12 includes a low-level noise discriminator 21 , a zero-crossing detector 22 , a zero-crossing counter 23 , a zero-crossing average counter 24 and a comparator 25 . in addition, figure 1 A two-way transceiver / t...

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Abstract

A hearing aid (60A) configured to be worn by a hearing-impaired user has a speech detector (10A) and a speech enhancer (40A) for enhancing speech being present in an input signal of the hearing aid (60A). The speech detector (10A) has means (11, 12) for independently detecting the presence of voiced and unvoiced speech in order to allow for the speech enhancer (40A) to increase the gain of speech signals suitably fast to incorporate the speech signals themselves. The hearing aid (60A) has means (49A, 50A) for communicating information regarding the detected speech signals wirelessly to a similar hearing aid (60B) worn contralaterally by the user for the purpose of mutually enhancing speech signals in the two hearing aids (60A, 60B) when speech is detected to be originating from the front of the user, and means (52B) for suppressing speech enhancement in the contralateral hearing aid (60B) when speech is detected to be originating from the ipse-lateral side of the user. The invention further provides a method of enhancing speech in a hearing aid.

Description

technical field [0001] This application relates to hearing aids. More specifically, the present invention relates to hearing aids with means for enhancing speech reproduction. The invention further relates to a method of signal processing in a hearing aid. Background technique [0002] A hearing aid is a small, battery-powered device that includes a microphone, audio processor, and sound output transducer, configured to be worn in or behind the ear by a hearing-impaired person. By fitting the hearing aid according to a prescription calculated from measurements of the user's hearing loss, the hearing aid can amplify certain frequency bands to compensate for hearing loss in those frequency bands. In order to provide precise and flexible amplification, most modern hearing aids are of the digital variety. Digital hearing aids contain a digital signal processor to process the audio signal from the microphone into an electrical signal suitable for driving the sound output trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R25/00G10L21/02G10L21/0232G10L21/06G10L25/78G10L25/93
CPCG10L21/02G10L21/0232G10L25/78G10L25/93G10L2021/065H04R25/356H04R2225/43H04R25/50H04R25/00G10L25/00
Inventor M·D·梅恩克A·B·尼尔森
Owner WIDEX AS
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