| 一种用于数字助听器的WOLA滤波器组的设计准则 |
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| 引用本文： | 崔杰,肖灵,王玥,孟晓辉,刘亭亭.一种用于数字助听器的WOLA滤波器组的设计准则[J].应用声学,2010,29(1):36-42. |
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| 作者姓名： | 崔杰 肖灵 王玥 孟晓辉 刘亭亭 |
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| 作者单位： | 1. 中国科学院声学研究所医用声学实验室,北京,100190;中国科学院研究生院,北京,100190
2. 中国科学院声学研究所医用声学实验室,北京,100190 |
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| 摘 要： | 针对WOLA(weighted overlap-add)滤波器组在数字助听器多通道处理中的应用,本文提出了一个满足该领域要求的具体的设计准则。根据这一准则,可用窗函数法进行滤波器设计,并把问题简化为对窗长度的选取。对线性扫频信号和语音信号多通道放大两种情况进行了仿真,结果表明,适当选取窗长度,滤波器组输出信号将符合要求并且无混迭。
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| 关 键 词： | WOLA滤波器组 设计准则 助听器 多通道 |
A kind of design criterion for WOLA filterbanks used in digital hearing aids |
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| CUI Jie,XIAO Ling,WANG Yue,MENG Xiao-Hui and LIU Ting-Ting.A kind of design criterion for WOLA filterbanks used in digital hearing aids[J].Applied Acoustics,2010,29(1):36-42. |
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| Authors: | CUI Jie XIAO Ling WANG Yue MENG Xiao-Hui and LIU Ting-Ting |
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| Institution: | CUI Jie 1,2 XIAO Ling 1 WANG Yue 1 MENG Xiao-Hui 1 LIU Ting-Ting 1(1 The Medical Acoustics Laboratory,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190)(2 The Graduate University of Chinese Academy of Sciences,Beijing 100190) |
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| Abstract: | A kind of design criterion for WOLA filterbanks used in multi-channel processing of digital hearing aids is presented.According to the new design criterion,the filter can be designed by window function,and the design can be simplified to the choice of windows lengths.Simulations of the two cases of amplification in multi-channel of linear chirp signal and speech signal are carried out.The results validate that the output signals of the designed filterbanks achieve the processing aim and have no aliasing. |
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| Keywords: | WOLA filterbanks Design criterion Heating aid Multi-channel |
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