Band importance functions of listeners with cochlear implants using clinical maps
Band importance functions of listeners with cochlear implants using clinical maps
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DOI：
10.1121/1.4967298
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发表时间：
2016-11-01
影响因子：
2.4
通讯作者：
Chatterjee, Monita
中科院分区：
文献类型：
--
作者：
Bosen, Adam K.;Chatterjee, Monita
频带重要性函数估计各个声学频带对语音清晰度的相对贡献。先前对植入人工耳蜗的听众的频带重要性的研究使用了实验图和直接刺激。在这里，对具有声刺激的临床图谱的频带重要性进行了估计。与听力正常的听众相比，植入人工耳蜗的听众的频带重要性功能更依赖于较低频率，并且听众间的一致性较差。这里观察到的受试者间差异表明，正如之前的研究所做的那样，对植入人工耳蜗的听众的频带重要性函数进行平均可能没有意义。此外，具有正常听力的听者对声码语音（模拟或不模拟激励传播）的频带重要性函数彼此没有不同，这表明除了激励传播之外，还需要其他因素来解释植入人工耳蜗的听众频带重要性的变化。 (C) 2016 年美国声学学会。
Band importance functions estimate the relative contribution of individual acoustic frequency bands to speech intelligibility. Previous studies of band importance in listeners with cochlear implants have used experimental maps and direct stimulation. Here, band importance was estimated for clinical maps with acoustic stimulation. Listeners with cochlear implants had band importance functions that relied more heavily on lower frequencies and showed less cross-listener consistency than in listeners with normal hearing. The intersubject variability observed here indicates that averaging band importance functions across listeners with cochlear implants, as has been done in previous studies, may not be meaningful. Additionally, band importance functions of listeners with normal hearing for vocoded speech that either did or did not simulate spread of excitation were not different from one another, suggesting that additional factors beyond spread of excitation are necessary to account for changes in band importance in listeners with cochlear implants. (C) 2016 Acoustical Society of America.