Binaural benefit for speech recognition with spectral mismatch across ears in simulated electric hearing
Binaural benefit for speech recognition with spectral mismatch across ears in simulated electric hearing
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DOI：
10.1121/1.3606460
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发表时间：
2011-08-01
影响因子：
2.4
通讯作者：
Fu, Qian-Jie
中科院分区：
文献类型：
--
作者：
Yoon, Yang-soo;Liu, Aiguo;Fu, Qian-Jie
本研究通过声学模拟研究了双耳人工耳蜗术中双耳频谱失配对双耳益处的影响。通过模拟耳朵间相对插入深度的变化，系统地操纵了双耳光谱失配。单侧和双侧呈现的句子识别是在静音和+5dB信噪比下对听力正常的听者进行测量的。当耳间插入深度的差异小于或等于1 mm时，可观察到显著的双耳益处。这一结果表明，双耳的益处依赖于冗余的语音信息，而不是耳朵之间的表现相似。(C)2011年美国声学学会
The present study investigated the effects of binaural spectral mismatch on binaural benefits in the context of bilateral cochlear implants using acoustic simulations. Binaural spectral mismatch was systematically manipulated by simulating changes in the relative insertion depths across ears. Sentence recognition, presented unilaterally and bilaterally, were measured in normal-hearing listeners in quiet and noise at +5 dB signal-to-noise ratio. Significant binaural benefits were observed when the interaural difference in insertion depth was 1 mm or less. This result suggests a dependence of the binaural benefit on redundant speech information, rather than on similarity in performance across ears. (C) 2011 Acoustical Society of America