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An examination of the effect of talker familiarity on the sentence recognition skills of cochlear implant users.

机译：谈话者熟悉度对人工耳蜗使用者句子识别能力的影响。

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摘要

Three experiments examined normal-hearing and cochlear-implant listeners' abilities to perceive and use talker-specific information in the speech signal. In Experiment 1 voice similarity judgments were gathered from normal-hearing listeners to maximize variability across talkers used in Experiment 2. These judgments were submitted to a multidimensional scaling (MDS) analysis; this solution was used to select the talkers.; Experiment 2 was an approximate replication of Nygaard and Pisoni's (1998) work. In this study cochlear-implant and normal-hearing listeners were trained to recognize 6 different voices. The cochlear-implant users recognized the voices with 59.31% accuracy and the normal-hearing listeners achieved 92.64% accuracy. After training the listeners completed a sentence recognition task in noise. In the task 6 familiar talkers spoken half of the sentences and 6 novel talkers spoke the other half. It was predicted that sentences spoken by the familiar talkers would be more accurately perceived than those spoken by the novel talkers. However, there was no difference in accuracy, nor was there a difference in performance across the groups of listeners. The factors contributing to these null results were discussed at length.; Experiment 3 gathered voice similarity judgments from the normal-hearing and cochlear-implant listeners of Experiment 2. These data were submitted to both classical and weighted MDS analyses. The voice maps showed notable differences in the perceptual spaces of the two groups of listeners. The participant space yielded from the weighted MDS showed great variation across all of the participants' judgments, but no clear trend supporting the listeners' group membership.; In conclusion, despite listening via a constrained, electric signal, the cochlear-implant users were successfully trained to recognize voices with notable accuracy (as were the normal-hearing listeners). Nevertheless, Experiment 2 failed to provide insight into talker familiarity's effect on the sentence recognition skills of cochlear-implant and normal-hearing listeners. These results are contrary to research with normal-hearing listeners that suggests talker familiarity facilitates speech processing in noise. The present studies did show, though, that cochlear-implant users appear to perceive and use talker-specific information differently than normal-hearing listeners.
机译：三个实验检查了正常听觉和人工耳蜗听众在语音信号中感知和使用特定于讲话者的信息的能力。在实验1中，从正常听力的听众那里收集了语音相似性判断，以最大程度地提高实验2中使用的各个谈话者的变异性。这些判断已提交至多维标度（MDS）分析；该解决方案用于选择讲话者。实验2是Nygaard和Pisoni（1998）工作的近似复制。在这项研究中，对人工耳蜗和听力正常的听众进行了训练，以识别6种不同的声音。人工耳蜗使用者识别语音的准确度为59.31％，正常听力的听众可以识别92.64％。训练后，听众在噪音中完成了句子识别任务。在任务中，有6位熟悉的说话者讲了一半的句子，有6位新颖的说话者讲了另一半。可以预料，熟悉的说话者所说的句子比小说的说话者所说的更准确。但是，在听众群体之间，准确性没有差异，演奏也没有差异。详尽讨论了导致这些无效结果的因素。实验3从实验2的正常听者和人工耳蜗听众那里收集了语音相似性判断。这些数据已提交给经典MDS分析和加权MDS分析。语音图显示了两组听众在感知空间上的显着差异。加权MDS产生的参与者空间在所有参与者的判断中显示出很大的差异，但是没有明确的趋势支持听者的组成员身份。总而言之，尽管通过受限的电信号进行聆听，但人工耳蜗使用者已成功地接受了训练，能够以显着的准确性识别语音（正常听力的聆听者也是如此）。然而，实验2未能深入了解说话者的熟悉度对人工耳蜗和正常听力者的句子识别能力的影响。这些结果与对正常听力的听众的研究相反，该研究表明，讲话者的熟悉度有助于在噪声中进行语音处理。但是，目前的研究确实表明，人工耳蜗使用者似乎在感知和使用特定于说话者的信息上与正常听者不同。

著录项

  • 作者

    Barker, Brittan Ann.;

  • 作者单位

    The University of Iowa.;

  • 授予单位 The University of Iowa.;
  • 学科 Health Sciences Audiology.; Psychology Cognitive.; Psychology Experimental.
  • 学位 Ph.D.
  • 年度 2006
  • 页码 122 p.
  • 总页数 122
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 耳科学、耳疾病;心理学;心理学;
  • 关键词

  • 入库时间 2022-08-17 11:40:57

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