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应用科学学报

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符合人耳听觉特征的数字助听器子带响度补偿

王青云 1；2, 赵力 1, 乔杰 1, 邹采荣 1   

  1. 1. 东南大学 信息科学与工程学院，江苏 南京 210096; 2. 南京工程学院 通信工程学院，江苏 南京 211167
  • 收稿日期:2008-06-05 修回日期:2008-08-06 出版日期:2008-12-10 发布日期:2008-12-10
  • 通信作者: 王青云

Sub-band Loudness Compensation for Hearing Aid Based on Human
Auditory

WANG Qing-yun 1；2, ZHAO Li 1, QIAO Jie 1, ZOU Cai-rong 1   

  1. 1.School of Information Science Engineering, Southeast University, Nanjing 210096,China; 2.School of Communication Engineering, Nanjing Institute of Technology, Nanjing 211167, China
  • Received:2008-06-05 Revised:2008-08-06 Online:2008-12-10 Published:2008-12-10
  • Contact: WANG Qing-yun

被引次数

10

摘要： 语音信号响度补偿是数字助听器的关键功能之一. 由于患者的听力损失常随信号频率改变，故响度补偿增益应随语音信号频率变化而调整. 该文提出针对人耳听觉特征进行子带划分响度补偿的方法，设计了实现响度补偿的完美重构子带滤波器组，并针对老年性听损患者给出子带滤波器组参数. 实验与仿真结果显示, 本方法很好地补偿了听损患者在不同频段的语音能量损失，使患者对语句的辨识率得到显著提升.

关键词: 响度补偿, 完美重构子带滤波器组, 人耳听觉特征

Abstract: Loudness compensation is a key function of hearing aids. Because the degree of hearing loss varies with frequency, the amount of loudness compensation should be adjusted to adapt the variation. In this paper a new method for sub-band loudness compensation is proposed based on human auditory. Design method for near perfect reconstruction oversampled filter bands is presented. Parameters of the filter bands for senile hearing loss are given. Results of simulation and experiments show that energy loss in different bands of hearing loss patients is well compensated and the recognition rate of sentences is significantly improved.

Key words: loudness compensation, near perfect reconstruction filter bands, human auditory

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