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[转载]【信息技术】【2004.05】双耳语音识别研究:声与电的听觉

已有 174 次阅读 2018-11-11 09:20 |系统分类:科研笔记|文章来源:转载

 


本文为美国德克萨斯大学达拉斯分校(作者:ARUNVIJAY MANI)的硕士论文,共70页。

 

一般认为,两个语音信号的融合是由相对起始时间影响的。本研究探讨了当频谱信息被分离并送入两只耳朵时,频谱分辨率可能是影响频谱融合的附加因素的假设。研究了两种不同的频谱信息分离方法。在第一种方法中,奇数通道的信号被送入一只耳朵,偶数通道的信号送入到另一只耳朵。在第二种方法中,低频通道被送入一只耳朵,而高频通道送入到另一只耳朵。针对正常听力听众和双侧耳蜗植入听众进行了实验,实验结果表明,听力正常者认为频谱分辨率影响频谱融合。双侧耳蜗植入者的结果表明,受试者能够在无噪条件下将信息准确地融合到两只耳朵中,但在噪声中无法实现。

 

It is generally accepted that the fusion oftwo speech signals presented dichotically is affected by the relative onsettime. This study investigated the hypothesis that spectral resolution might bean additional factor influencing spectral fusion when the spectral informationis split and presented dichotically to the two ears. Two different methods ofsplitting the spectral information were investigated. In the first method, theodd-index channels were presented to one ear and the even-index channels to theother ear. In the second method the lower frequency channels were presented toone ear and the high frequency channels to the other ear. The experiments wereconducted with both normal hearing listeners and bilateral cochlear implantlisteners. Results with normal hearing listeners indicated that spectralresolution did affect spectral fusion. Results with bilateral cochlear implantusers indicated that subjects were able to fuse information presented to thetwo ears accurately in quiet but not in noise.

 

引言

文献回顾

正常听力的双耳建模

双侧人工耳蜗植入者的双耳语音识别

小结与结论


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