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A method for enhancing the frequency resolution of digital hearing aids

A frequency resolution, hearing aid technology, applied to hearing aids, electrical components, etc., can solve the problem of not performing frequency resolution, measurement, correction or compensation

Inactive Publication Date: 2018-10-26
GUANGZHOU UNIVERSITY
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AI Technical Summary

Problems solved by technology

However, the traditional hearing aid fitting method only measures the hearing threshold, comfort threshold and pain threshold of hearing-impaired patients at each frequency point, and does not measure the frequency resolution
Current digital hearing aid speech signal processing algorithms do not correct or compensate for the loss of frequency resolution in hearing-impaired patients

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  • A method for enhancing the frequency resolution of digital hearing aids
  • A method for enhancing the frequency resolution of digital hearing aids
  • A method for enhancing the frequency resolution of digital hearing aids

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0046] The method for enhancing the frequency resolution of digital hearing aids of the present invention mainly includes the following method steps:

[0047] S1. Obtain the frequency discrimination threshold and frequency value of the frequency point where the patient's frequency resolution decreases.

[0048] Select the audio sequence of multiple test frequency points, and measure the frequency discrimination threshold of the patient at each test frequency point in turn. The measurement range is from 125Hz to 8000Hz, a total of 11 test frequency points (125Hz, 250Hz, 500Hz, 750Hz, 1000Hz, 1500Hz, 2000Hz, 3000Hz, 4000Hz, 6000Hz, 8000Hz) are sequentially measured for frequency discrimination threshold, the reference test signal f i ,i=1,...11 are generated by the computer test software, which are sequentially taken from the above 11 test frequency point signals, a...

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Abstract

The invention relates to the technical field of voice signal processing and especially relates to a frequency resolution enhancing method of a digital hearing aid. The frequency resolution enhancing method mainly comprises the following steps of: S1, obtaining a frequency differential threshold and a frequency value of a frequency resolution decreasing frequency point of a patient; S2, according to the frequency differential threshold and the frequency value, determining a frequency stretching area and a frequency compression area in which the frequency resolution needs to be enhanced; and S3, carrying out non-linear frequency stretching on the frequency stretching area of voice signals input into the digital hearing aid, and carrying out non-linear frequency compression on the frequency compression area. According to the invention, signal frequency intervals of the areas in which the frequency resolution decreases are increased, the frequency sensitivity of the patient is improved, the frequency resolution of the voice signals input into the digital hearing aid is improved, and the language identification capability and the language communication capability of the patient are further improved.

Description

Technical field [0001] The invention relates to the technical field of speech signal processing, in particular to a method for enhancing the frequency resolution of a digital hearing aid. Background technique [0002] The current digital hearing aid methods mainly focus on the improvement of the "audibility" of the acoustic signal, that is, how to appropriately amplify the loudness of signals of different frequencies and different sound pressure levels through hardware or software methods to compensate for the hearing loss of patients. Loss of sound intensity. However, human hearing is a complicated process, and hearing does not necessarily mean understanding. When performing verbal communication in a noisy environment or interfering sound, the frequency resolution of the target speech of hearing-impaired patients is crucial to understanding the language. The index to measure the frequency resolution of the human ear is the frequency discrimination threshold. Previous studies ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R25/00
CPCH04R25/00
Inventor 邹采荣王青云梁瑞宇汪家冬
Owner GUANGZHOU UNIVERSITY
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