COMPENSATION STRATEGIES FOR THE PERTURBATION OF THE ROUNDED VOWEL [U] USING A LIP TUBE - A STUDY OF THE CONTROL SPACE IN SPEECH PRODUCTION
COMPENSATION STRATEGIES FOR THE PERTURBATION OF THE ROUNDED VOWEL [U] USING A LIP TUBE - A STUDY OF THE CONTROL SPACE IN SPEECH PRODUCTION
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DOI：
10.1121/1.413277
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发表时间：
1995-11-01
影响因子：
2.4
通讯作者：
ORLIAGUET, JP
中科院分区：
文献类型：
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作者：
SAVARIAUX, C;PERRIER, P;ORLIAGUET, JP
一个唇扰动的法国圆元音[u]被用来检查各自的权重的发音和声学水平的元音生产的控制。将直径为20 mm的唇管插入扬声器的唇之间。声学和X射线发音数据获得孤立的元音生产由11个法语母语者在正常和唇管条件。通过F1-F2的准确性评价补偿能力。格局使用Fant的新模型[ISCLP 92 Proceedings（University of阿尔伯塔，埃德蒙顿，1992）]从列线图中检查可能的补偿。发音变化的声学解释是通过从正中矢状位视图生成面积函数来进行的，与谐波声学模型一起使用。对于第一个扰动试验，在插入管之后，没有扬声器能够产生完全的补偿，但是观察到扬声器之间的明显差异：其中七个移动舌头，因此限制了F1-F2模式的恶化，而其余四个没有显示出任何相关的发音变化。这些数据支持发音声学关系的特定于说话者的内部表示的想法。以下19个扰动试验的结果表明，扬声器使用的声学信号，以制定一个最佳的补偿策略。一个扬声器实现了完全的补偿，改变他的缩窄位置从腭到腭咽区域的声道。另外六个人把舌头移向正确的方向，实现了部分声学补偿，而剩下的四个人没有补偿。因此，语音产生的控制似乎是针对实现听觉目标，但完全实现目标可能是不可能的，因为扬声器依赖的发音限制。有人建议，这些限制是由于更多的扬声器特定的内部表示的发音声学关系，而不是解剖或神经生理学的限制。因此，语音控制可以部分地通过使用这种内部表示来确保，并且部分地-特别是在扰动条件下-通过监测声学信号来确保。(C)1995年美国声学学会。
A labial perturbation of the French rounded vowel [u] was used to examine the respective weights of the articulatory and acoustic levels in the control of vowel production. A 20-mm-diam lip tube was inserted between the lips of the speakers. Acoustic and x-ray articulatory data were obtained for isolated vowel productions by 11 native French speakers in normal and lip-tube conditions. Compensation abilities were evaluated through accuracy of the F1-F2. pattern. Possible compensations were examined from nomograms using the new model of Fant [ISCLP 92 Proceedings (University of Alberta, Edmonton, 1992)]. Acoustic interpretations of the articulatory changes were made by generating area functions from midsagittal views, used together with a harmonic acoustic model. For the first perturbed trial, immediately after the insertion of the tube, no speaker was able to produce a complete compensation, but clear differences between speakers were observed: Seven of them moved the tongue and hence limited the deterioration of the F1-F2 pattern, whereas the remaining four did not show any pertinent articulatory change. These data support the idea of speaker-specific internal representations of the articulatory-to-acoustic relationships. The results for the following 19 perturbed trials indicate that speakers used the acoustic signal in order to elaborate an optimal compensation strategy. One speaker achieved complete compensation by changing his constriction location from a velo-palatal to a velo-pharyngeal region of the vocal tract. Six others moved their tongues in the right direction, achieving partial acoustic compensation, while the remaining four did not compensate. The control of speech production thus seems to be directed toward achieving an auditory goal, but completely achieving the goal may be impossible because of speaker-dependent articulatory constraints. It is suggested that these constraints are due more to speaker-specific internal representation of articulatory-to-acoustic relationships rather than to anatomical or neurophysiological limitations. Speech control could thus be ensured partly with the use of this internal representation, and partly - particularly under perturbed conditions - by monitoring the acoustic signal. (C) 1995 Acoustical Society of America.