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Hearing aid voice quality W-PESQ objective evaluation method based on gain compensation

An objective evaluation method and gain compensation technology, applied in speech analysis, instruments, etc., can solve the problem of hearing loss and other problems of people with hearing impairments, and achieve the effect of easy evaluation, great practical value, and good agreement between subjective and objective

Inactive Publication Date: 2017-09-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Application Information

AI Technical Summary

Problems solved by technology

However, no relevant technology has been found to be applied in the field of hearing aid voice quality, and the W-PESQ algorithm is based on the hearing level of normal human ears, without considering the hearing attenuation of hearing-impaired people

Method used

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  • Hearing aid voice quality W-PESQ objective evaluation method based on gain compensation
  • Hearing aid voice quality W-PESQ objective evaluation method based on gain compensation
  • Hearing aid voice quality W-PESQ objective evaluation method based on gain compensation

Examples

Experimental program
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Embodiment 1

[0033] The following is a detailed description of a certain hearing aid product as an example. Choose three different levels of hearing aids, good, bad, and medium, as test samples, and mark them as hearing aid 1, hearing aid 2, and hearing aid 3. First, use the pure voice in the Casia Chinese Mandarin voice library to synthesize pure voice over 60s, and then perform a specific test On the platform, the output voice signals of the three tested hearing aids are respectively collected. The double-threshold endpoint detection method is used to detect the starting endpoint of the recorded hearing aid output voice and align it with the original pure voice. Taking the signal processing process of hearing aid 1 as an example, the comparison between the recorded hearing aid output speech signal and the original speech signal is as follows: figure 2 As shown, since the original pure voice is delayed after passing through the hearing aid, and the operation during the voice recording p...

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Abstract

The invention belongs to the hearing aid voice quality evaluation technology field and especially relates to a hearing aid voice quality W-PESQ objective evaluation method based on gain compensation. The method comprises steps that firstly, an end point detection method is utilized to carry out alignment processing of a recorded hearing aid output voice signal and an original pure voice signal; signal interception processing on the recorded hearing aid output voice signal and the original pure voice signal after alignment processing is carried out; gain compensation of the pure voice signal without flowing through a hearing aid is carried out; a gain compensation filter is designed, gain adjustment on the original pure voice signal is carried out according to a frequency domain gain curve of the present hearing aid so as to realize fitting of a frequency domain response curve of the gain compensation filter and a gain curve of the hearing aid; lastly, objective evaluation on hearing aid voice quality is carried out through employing a W-PESQ algorithm. The method is advantaged in that a hearing disorder population is considered, the gain compensation filter is designed, through subjective verification, the method has excellent subjective and objective agreement, and great practical values are realized.

Description

technical field [0001] The invention belongs to the technical field of hearing aid speech quality evaluation, in particular to a W-PESQ objective evaluation method for speech quality of hearing aids based on gain compensation. Background technique [0002] With the continuous advancement of science and technology, hearing aids are showing trends such as intelligence and digitization. The high-end features of hearing aids are becoming more and more abundant, and the price gap is also widening. How to evaluate the quality of hearing aids is a matter of great concern to hearing aid manufacturers, consumers and fitting physicians. At present, the objective evaluation of hearing aids is mainly limited to physical and acoustic parameters, and there are relevant standards and specifications both at home and abroad. Speech quality is an important performance of hearing aids, and its evaluation is mainly limited to subjective evaluation. The subjective evaluation method is not sui...

Claims

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Application Information

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IPC IPC(8): G10L25/27G10L25/60G10L25/87
CPCG10L25/27G10L25/60G10L25/87
Inventor 陈晓梅钟波杨平何龙标牛锋赵正宜许欢冯秀娟
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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