本文為美國德克薩斯大學達拉斯分校（作者：ARUNVIJAY MANI）的碩士論文，共70頁。

一般認為，兩個語音訊號的融合是由相對起始時間影響的。本研究探討了當頻譜資訊被分離並送入兩隻耳朵時，頻譜解析度可能是影響頻譜融合的附加因素的假設。研究了兩種不同的頻譜資訊分離方法。在第一種方法中，奇數通道的訊號被送入一隻耳朵，偶數通道的訊號送入到另一隻耳朵。在第二種方法中，低頻通道被送入一隻耳朵，而高頻通道送入到另一隻耳朵。針對正常聽力聽眾和雙側耳蝸植入聽眾進行了實驗，實驗結果表明，聽力正常者認為頻譜解析度影響頻譜融合。雙側耳蝸植入者的結果表明，受試者能夠在無噪條件下將資訊準確地融合到兩隻耳朵中，但在噪聲中無法實現。

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.

1 引言
2 文獻回顧
3 正常聽力的雙耳建模
4 雙側人工耳蝸植入者的雙耳語音識別
5 小結與結論

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