Effects of side cavities and tongue stabilization: Possible extensions of the quantal theory
Effects of side cavities and tongue stabilization: Possible extensions of the quantal theory
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DOI：
10.1016/j.wocn.2008.11.002
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发表时间：
2010-01-01
影响因子：
1.9
通讯作者：
Takemoto, Hironori
中科院分区：
文献类型：
--
作者：
Honda, Kiyoshi;Takano, Sayoko;Takemoto, Hironori
本文通过实验验证了“齿间效应”和“稳定效应”这两个假说，这两个假说可能有助于理解某些元音的量子声学特性。齿间空间效应有其假设的基础[史蒂文斯，K。N.，& Perkell，J. S.（1977年）。言语生理和语音特征。In M. S. Sawashima，& F.库珀（编辑），语音生成的动态方面（pp. 323-341）。东京：东京：东京大学出版社]的研究表明，上下牙弓之间的差距与口腔容积在低元音和高元音之间的突然变化有关。我们的磁共振成像（MRI）数据表明，声道的这一侧腔在低元音（如[a]）中与口腔融合，但在非低元音（如[i]和[e]）中形成双侧侧支。这种突然的变化，在腔的附属声道贡献了中断，否则顺利共振峰过渡。稳定效果[Fujimura，O.，& Kakita，Y.（1979年）。语言清晰度的定量描述。在B。Lindblom，& S. Ohman（Eds.），语音通信研究前沿（Frontiers of Speech Communication Research）17-24）。伦敦：Academic Press]的假设是颏舌肌束之间的共同收缩稳定了[i]的共振峰模式，这得到了肌电图数据分析的支持。我们的基于MRI的舌肌几何形状测量结果表明，[a]的元音稳定性还有一个原因：舌骨舌肌和茎突舌肌对该元音的舌根后部隆起受到舌外茎突舌肌周围咽旁组织的机械限制。(C)2008爱思唯尔有限公司保留所有权利。
This article provides experimental evidence for two hypotheses, the "interdental-space effect" and the "stabilization effect", that may help to understand quantal acoustic properties of certain vowels. The interdental-space effect has its basis on the hypothesis [Stevens, K. N., & Perkell, J. S. (1977). Speech physiology and phonetic features. In M. S. Sawashima, & F. Cooper (Eds.), Dynamic aspect of speech production (pp. 323-341). Tokyo: University of Tokyo Press] that the gap between the upper and lower dental arches is involved in abrupt changes of oral cavity volume between low and high vowels. Our magnetic resonance imaging (MRI) data indicate that this side cavity of the vocal tract is fused with the oral cavity in low vowels such as [a] but forms a bilateral side-branch in non-low vowels such as [i] and [e]. This abrupt change in the cavity's affiliation to the vocal tract contributes a discontinuity in otherwise smooth formant transitions. The stabilization effect [Fujimura, O., & Kakita, Y. (1979). Remarks on quantitative description of the lingual articulation. In B. Lindblom, & S. Ohman (Eds.), Frontiers of speech communication research (pp. 17-24). London: Academic Press] is the hypothesis that co-contraction among bundles of the genioglossus muscle stabilizes the formant pattern for [i], which was supported by analysis of electromyographic data. Our M RI-based measurement of tongue muscle geometry suggests an additional cause of vowel stabilization for [a]: posterior bulging of the tongue base for this vowel by the hyoglossus and styloglossus is mechanically limited by the parapharyngeal tissue that surrounds the extra-lingual styloglossus. (C) 2008 Elsevier Ltd. All rights reserved.