Individual differences in the perception of regional, nonnative, and disordered speech varieties
Individual differences in the perception of regional, nonnative, and disordered speech varieties
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DOI：
10.1121/1.4966677
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发表时间：
2016-11-01
影响因子：
2.4
通讯作者：
McKee, Megan
中科院分区：
文献类型：
--
作者：
Bent, Tessa;Baese-Berk, Melissa;McKee, Megan
语音感知能力在不同的收听者之间有很大的差异，特别是在不利的条件下，包括那些源于环境退化的条件（例如，噪声）或来自与讲话者相关的挑战（例如，非母语或语言紊乱）。本研究探讨了成年听众的识别单词的短语产生的六个谈话者代表三种语音品种：一个非母语口音（西班牙口音英语），一个地区方言（爱尔兰英语），和一个混乱的品种（共济失调性构音障碍）。语义异常的短语，从这些说话者在转录任务和可懂度分数，正确的单词百分比，进行了比较，在三个语音品种。三个认知语言领域接受性词汇，认知灵活性，抑制控制的注意力进行了评估，作为可能的预测个别单词识别性能。西班牙口音的清晰度分数与爱尔兰英语和共济失调性构音障碍的分数显着相关。相比之下，爱尔兰英语和构音障碍的得分并不相关。此外，接受性词汇是唯一的认知语言评估，显着预测可懂度分数。这些结果表明，而不是一个全球性的感知语音偏离本土方言规范的技能，听众可能拥有特定的能力，以克服特定类型的声学语音偏差。此外，词汇量的大小提供了性能的好处，从一个人的典型的方言规范的语音清晰度偏离。(C)2016年美国声学学会。
Speech perception abilities vary substantially across listeners, particularly in adverse conditions including those stemming from environmental degradation (e.g., noise) or from talker-related challenges (e.g., nonnative or disordered speech). This study examined adult listeners' recognition of words in phrases produced by six talkers representing three speech varieties: a nonnative accent (Spanish-accented English), a regional dialect (Irish English), and a disordered variety (ataxic dysarthria). Semantically anomalous phrases from these talkers were presented in a transcription task and intelligibility scores, percent words correct, were compared across the three speech varieties. Three cognitive-linguistic areas-receptive vocabulary, cognitive flexibility, and inhibitory control of attention-were assessed as possible predictors of individual word recognition performance. Intelligibility scores for the Spanish accent were significantly correlated with scores for the Irish English and ataxic dysarthria. Scores for the Irish English and dysarthric speech, in contrast, were not correlated. Furthermore, receptive vocabulary was the only cognitive-linguistic assessment that significantly predicted intelligibility scores. These results suggest that, rather than a global skill of perceiving speech that deviates from native dialect norms, listeners may possess specific abilities to overcome particular types of acoustic-phonetic deviation. Furthermore, vocabulary size offers performance benefits for intelligibility of speech that deviates from one's typical dialect norms. (C) 2016 Acoustical Society of America.