Contribution of two sources of listener knowledge to intelligibility of speakers with cerebral palsy
Contribution of two sources of listener knowledge to intelligibility of speakers with cerebral palsy
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DOI：
10.1044/1092-4388(2007/086
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发表时间：
2007-10-01
影响因子：
2.6
通讯作者：
Hustad, Katherine C.
中科院分区：
文献类型：
--
作者：
Hustad, Katherine C.
目的：本研究探讨了两种语言知识来源（字母线索和语义可预测性）对构音障碍说话者可懂度的独立和联合影响。方法：8名脑瘫和构音障碍的说话者提供语音样本，128名听者转录语音样本（每个扬声器16名听众）在4种不同的条件下（没有提示和不可预测的句子;没有提示和可预测的句子;字母提示和不可预测的句子;字母提示和可预测的句子）。转录结果是因变量，并被评为正确识别的listeners.Results的单词的百分比：字母线索和语义的可预测性作出独立和重叠的贡献，可理解性。此外，字母线索占更多的增益分数的变化比语义的可预测性。不可分割的联合效应，从两个来源的知识也作出了重要贡献的可理解性。结论：字母线索可能是一个更强大的信息来源，用于解决词汇歧义比语义的可预测性，为听众谁面临构音障碍的讲话。
Purpose: This study examined the independent and combined effects of two sources of linguistic knowledge (alphabet cues and semantic predictability) on the intelligibility of speakers with dysarthria. The study also examined the extent to which each source of knowledge accounted for variability in intelligibility gains.Method: Eight speakers with cerebral palsy and dysarthria contributed speech samples, and 128 listeners transcribed the speech samples (16 listeners per speaker) in 4 different conditions (no cues and unpredictable sentences; no cues and predictable sentences; alphabet cues and unpredictable sentences; alphabet cues and predictable sentences). Listener transcription results were the dependent variable and were scored as the percentage of words identified correctly by listeners.Results: Both alphabet cues and semantic predictability made independent and overlapping contributions to intelligibility. In addition, alphabet cues accounted for more of the variability in gain scores than semantic predictability. Inseparable joint effects from the two sources of knowledge also made an important contribution to intelligibility.Conclusion: Alphabet cues may be a more powerful source of information for resolving lexical ambiguity than semantic predictability for listeners who are faced with dysarthric speech.