Efficient design method of non-uniform cosine modulated filter bank for digital hearing aids

作     者：郭如雪 赵力 梁瑞宇 邹采荣 Guo Ruxue;Zhao Li;Liang Ruiyu;Zou Cairong

作者机构：东南大学信息科学与工程学院南京210096 南京工程学院通信工程学院南京211167 广州大学机械与工程学院广州510006 

基　　金：The National Natural Science Foundation of China(No.61375028,61673108) China Postdoctoral Science Foundation(No.2016M601696) Qing Lan Project the Program for Special Talent in Six Fields of Jiangsu Province(No.2016-DZXX-023) Jiangsu Planned Projects for Postdoctoral Research Funds(No.1601011B) 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2017年第33卷第2期

页      码：140-144页

摘      要：To promote the performance of the traditional multichannel filter bank which leads to speech quality degradation,an efficient design method of the non-uniform cosine modulated filter bank（CMFB） based on the audiogram for digital hearing aids is proposed. First, a low-pass prototype filter is designed by the linear iterative algorithm. Secondly,the uniform CMFB is achieved on the basis of the principle formulas. Then, the adjacent channels of a uniform filter bank which have low or gradual slopes are merged according to the trend of audiogram of the hearing impaired person. Finally,the corresponding non-uniform CMFB is obtained. Simulation results show that the signal processed by the proposed filter bank is similar to the original signal in a time-domain waveform and spectrogram without significant distortion or difference. The speech quality results show that the personal evaluation of speech quality（PESQ） of non-uniform CMFB is 35% higher than that of the traditional design, and the hearing-aid speech quality index（HASQI） increases by about 40%.

主 题 词：digital hearing aids cosine modulated filter bank(CMFB) non-uniform filter bank speech quality 

学科分类：0711[理学-心理学类] 07[理学] 

核心收录：

D　O　I：10.3969/j.issn.1003-7985.2017.02.003

馆 藏 号：203236873...