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
CN105357619BInactive Publication Date: 2018-10-26GUANGZHOU UNIVERSITY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU UNIVERSITY
Publication Date
2018-10-26
Estimated Expiration
Not applicable ยท inactive patent

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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.
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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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