Generalization of Perceptual Learning of Degraded Speech Across Talkers
Generalization of Perceptual Learning of Degraded Speech Across Talkers
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DOI：
10.1044/2017_jslhr-h-16-0300
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发表时间：
2017-11-01
影响因子：
2.6
通讯作者：
Johnsrude, Ingrid S.
中科院分区：
文献类型：
--
作者：
Huyck, Julia Jones;Smith, Rachel H.;Johnsrude, Ingrid S.
目的：我们研究了噪声语音编码（NV）语音的感知学习是否针对特定的说话者或口音。方法：四组听众（每组18人）首先通过听20个NV句子进行训练，这些句子是由与听众口音相同或不同地区口音的说话者录制的。然后，他们在2 × 2（训练说话者每口音x测试说话者每口音）的设计中，从母语或非母语说话者那里听到20个新颖的NV句子。结果：与同一口音（母语或非母语）说话者训练和测试的参与者的单词报告测试分数与每种口音训练一个说话者和另一个说话者测试的参与者没有差异。结论：NV言语的学习在说话者之间完全普遍化。另外两个实验证实了这一结果。因此，当听者被训练去理解NV语音时，他们不是在学习说话者或口音特定的特征，而是在学习如何利用退化信号中可用的信息。研究结果表明，如果植入人工耳蜗的人主要通过听另一个说话人（比如配偶）说话来学习理解语言，那么他们的语言能力会严重下降，可能不会处于太不利的地位。
Purpose: We investigated whether perceptual learning of noise-vocoded (NV) speech is specific to a particular talker or accent.Method: Four groups of listeners (n = 18 per group) were first trained by listening to 20 NV sentences that had been recorded by a talker with either the same native accent as the listeners or a different regional accent. They then heard 20 novel NV sentences from either the native-or nonnative-accented talker (test), in a 2 x 2 (Training Talker per Accent x Test Talker per Accent) design.Results: Word-report scores at test for participants trained and tested with the same (native-or nonnative-accented) talker did not differ from those for participants trained with 1 talker per accent and tested on another.Conclusions: Learning of NV speech generalized completely between talkers. Two additional experiments confirmed this result. Thus, when listeners are trained to understand NV speech, they are not learning talker-or accent-specific features but instead are learning how to use the information available in the degraded signal. The results suggest that people with cochlear implants, who experience spectrally degraded speech, may not be too disadvantaged if they learn to understand speech through their implant by listening primarily to just 1 other talker, such as a spouse.