计算机技术与发展2016，Vol.26Issue(6)：123-126,132,5.DOI:10.3969/j.issn.1673-629X.2016.06.027
数字助听器中多通道响度补偿算法的研究
Research on Multi-channel Loudness Compensation in Digital Hearing Aids
摘要
Abstract
Loudness compensation algorithm is a key technique in digital hearing aid. At present, digital hearing aid in multi-channel loudness compensation method,is usually high gain for the high frequency part of speech. However,because of the relatively small range of hearing loss in the high frequency range,the high gain of the high frequency part is easy to exceed the range of hearing loss. Wide dy-namic compression technique is introduced in this paper. First the dynamic range of the speech according to a certain proportion is uni-formly compressed to patients with residual hearing,then the band is partitioned with non equal width,and loudness compensation and gain control is carried out in different frequency band. Finally,the signal is reconstructed,removing partial noise by wavelet threshold de-noising technology. Experiment shows that the method makes the loudness of speech after compensation completely mapped to range of hearing loss in patients,effectively improving the patient’ s hearing level,especially on speech identification of high frequency part with good effect.关键词
响度补偿/宽动态压缩/正交镜像滤波器组/增益控制Key words
loudness compensation/wide dynamic compression/quadrature mirror filter bank/gain control分类
信息技术与安全科学引用本文复制引用
沐城,张玲华..数字助听器中多通道响度补偿算法的研究[J].计算机技术与发展,2016,26(6):123-126,132,5.基金项目
江苏省高校自然科学研究重大项目(13KJA510003) （13KJA510003）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
