Individual variability in phonetic convergence of vowels and rhythm

Individual variability in phonetic convergence of vowels and rhythm
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元音和节奏的语音收敛的个体差异

DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
R. Diehl
R. Diehl
中科院分区：
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文献类型：
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作者：
G. Rao;Rajka Smiljanic;R. Diehl

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语音收敛（PC）已被证明是分段（元音，声音开始时间）和超分段（重音，语调）属性（尼尔森，2008年; Delvaux & Soquet，2007年;菲利普斯& Clopper，2010年; Rao，Smiljanic & Diehl，2011年）。由于PC是受很大的个体差异（Ni Chiosain，2007），目前的研究探讨了PC的个体差异，在两个音段和超音段域的美国英语为母语的人。六对女性和六对男性在交互式地图任务之前和之后阅读CVC音节和一小段。对于每个二元体，在元音的收敛进行了测量，使用共振峰和余弦相似性度量单个元音和整个元音空间。使用包络调制频谱的质心（EMS +质心，Rao & Smiljanic，2011）测量节律收敛。总体而言，扬声器对收敛到不同程度的两种措施。元音类型、方言背景和性别对聚合程度有影响。一般来说，男性更容易在节奏上收敛，而女性更容易在元音上收敛。这扩展了基于性别的收敛差异是由于对索引特征的感知敏感性的发现（Nami等人，2002; Babel，2009）和口语中的特定声音特征。
Phonetic convergence (PC) has been demonstrated for segmental (vowels, voice onset time) and suprasegmental (stress, intonation) properties (Nielsen, 2008; Delvaux & Soquet, 2007; Phillips & Clopper, 2010; Rao, Smiljanic & Diehl, 2011). Since PC is subject to large individual differences (Ni Chiosain, 2007), the current study examined individual variability in PC in both segmental and suprasegmental domains for native speakers of American English. Six female and six male pairs read CVC syllables and a short paragraph before and after an interactive map task. For each dyad, convergence in vowels was measured using formants and the cosine similarity metric for individual vowels and for the entire vowel space. Convergence in rhythm was measured using the centroid of the envelope modulation spectrum (EMS + centroid, Rao & Smiljanic, 2011). Overall, speaker pairs converged to different extents in both measures. Vowel type, dialect background, and gender were found to influence the degree of convergence. In general, men were more likely to converge in rhythm whereas women were more likely to converge in vowels. This extends the findings that gender-based differences in convergence are due to perceptual sensitivity to indexical features (Nami et al., 2002; Babel, 2009) and particular sound features in spoken utterances.