Perceptual contributions of the consonant-vowel boundary to sentence intelligibility
Perceptual contributions of the consonant-vowel boundary to sentence intelligibility
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DOI：
10.1121/1.3159302
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发表时间：
2009-08-01
影响因子：
2.4
通讯作者：
Kewley-Port, Diane
中科院分区：
文献类型：
--
作者：
Fogerty, Daniel;Kewley-Port, Diane
虽然研究集中在辅音对口语音节或单词可理解性的感知贡献上，但在句子中，元音在确定可理解性方面比辅音具有明显的感知优势[Kewley-Port等人，J. Acoust. Soc. Am. 122，2365-2375（2007）]。本研究采用噪音替代范式，探讨音段边界的过渡信息对辅音和元音感知的影响。在替换之间保留的语音信号被定义为一瞥窗口。在第一个实验中，一瞥窗口包含的过渡边界信息，要么添加到辅音或从元音删除的比例。结果复制了一个二比一的元音优势，在传统的辅音-元音边界的可理解性，并建议元音的贡献仍然强大的对比例删除的信号。第二个实验研究的组合效果随机一瞥窗口不锁定段和持续时间的分布测量的辅音与元音瞥见实验1中观察到的。结果表明，对于随机瞥见，瞥见的累计句子持续时间是一个很好的预测性能。跨实验的比较证实，较高比例的元音信息内瞥见产生最高的句子可理解性。(C)2009年美国声学学会。[DOI：10.1121/1.3159302]
Although research has focused on the perceptual contribution of consonants to spoken syllable or word intelligibility, in sentences vowels have a distinct perceptual advantage over consonants in determining intelligibility [Kewley-Port et al., J. Acoust. Soc. Am. 122, 2365-2375 (2007)]. The current study used a noise replacement paradigm to investigate how perceptual contributions of consonants and vowels are mediated by transitional information at segmental boundaries. The speech signal preserved between replacements is defined as a glimpse window. In the first experiment, glimpse windows contained proportional amounts of transitional boundary information that was either added to consonants or deleted from vowels. Results replicated a two-to-one vowel advantage for intelligibility at the traditional consonant-vowel boundary and suggest that vowel contributions remain robust against proportional deletions of the signal. The second experiment examined the combined effect of random glimpse windows not locked to segments and the distributions of durations measured from the consonant versus vowel glimpses observed in Experiment 1. Results demonstrated that, for random glimpses, the cumulative sentence duration glimpsed was an excellent predictor of performance. Comparisons across experiments confirmed that higher proportions of vowel information within glimpses yielded the highest sentence intelligibility. (C) 2009 Acoustical Society of America. [DOI: 10.1121/1.3159302]