An adaptive multichannel loudness compensation method  

一种自适应多通道响度补偿方法（英文）

作　　者：王侠[1] 梁瑞宇[2] 王青云[2] 申红明[3] 赵力[1] 邹采荣[1] 

机构地区：[1]东南大学水声信号处理教育部重点实验室,南京210096 [2]南京工程学院通信工程学院,南京211167 [3]南通大学电子信息学院,南通226019

出　　处：《Journal of Southeast University(English Edition)》2016年第2期141-145,共5页东南大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.61301219,61375028,61273266);the Natural Science Foundation of Jiangsu Province(No.BK20130241);the Fundamental Research Funds for the Central Universities(No.2242013K30010);the Science and Technology Program of Nantong(No.BK2014002)

摘　　要：To alleviate the conflict between audibility and distortion in the conventional loudness compensation method, an adaptive multichannel loudness compensation method is proposed for hearing aids. The linear and wide dynamic range compression （WDRC） methods are alternately employed according to the dynamic range of the band-passed signal and the hearing range （HR） of the patient. To further reduce the distortion caused by the WDRC and improve the output signal to noise ratio （SNR） under noise conditions, an adaptive adjustment of the compression ratio is presented. Experimental results demonstrate that the output SNR of the proposed method in babble noise is improved by at least 1.73 dB compared to the WDRC compensation method, and the average speech intelligibility is improved by 6.0% and 5. 7%, respectively, compared to the linear and WDRC compensation methods.为减小助听器系统中传统响度补偿方法中语音可听和畸变之间的矛盾,提出了一种自适应的多通道响度补偿方法.该方法根据带通信号的动态范围和患者的听阈交替使用线性方法和动态范围压缩方法.为进一步减小动态范围压缩引起的畸变,并提高噪声环境下的输出信噪比,给出了一种自适应调整压缩比的方法.实验结果表明,与WDRC动态范围压缩补偿方法相比,所提方法在语噪声环境下的输出信噪比至少提高了1.73 dB;与线性和动态范围压缩补偿方法相比,所提方法的平均语音可懂度分别提升了6.0%和5.7%.

关 键 词：loudness compensation wide dynamic rangecompression gammatone filter banks hearing aids 

分 类 号：TN912.3[电子电信—通信与信息系统]