Motor equivalent strategies in the production of /u/ in perturbed speech
Motor equivalent strategies in the production of /u/ in perturbed speech
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扰动言语中产生 /u/ 时的运动等效策略
DOI：
10.1121/1.2932868
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发表时间：
2008
影响因子：
2.4
通讯作者：
Perrier
中科院分区：
文献类型：
--
作者：
Brunner;Perrier
在发/u/的过程中，有几种发音策略可用，所有这些策略都会产生类似的声学输出。/u/有两个主要的收缩，在膜和嘴唇处。任何一种收缩的扰动都可以在另一种收缩中得到补偿，例如，在掌部收缩得更大，嘴唇就会更突出，嘴唇张开得更大，舌头就会更收缩。本研究调查了说话者在扰动下是否使用这种关系。为6名发言者提供了腭假体，佩戴了两周。讲话者被要求认真地尝试说出正常的语言。在适应期间，他们的讲话通过EMA和声学录制了几次。测量了/u/-产物的形成峰值。评估腭部收缩宽度和唇部突出程度。对于四个说话者，收缩宽度和嘴唇突出之间存在相关性。有时可以观察到唇突与F1或F2呈负相关，但收缩大小与任何一个峰均无相关。结果表明，在扰动下，说话人采用运动等效策略来适应。收缩大小和唇突之间的相关性比调查正常言语的研究更强。这可能是因为在扰动下，说话者倾向于尝试几种策略以达到声学目标，因此协变性可能更大。
Several articulatory strategies are available during the production of /u/, all resulting in a similar acoustic output. /u/ has two main constrictions, at the velum and at the lips. A perturbation of either constriction can be compensated at the other one, e.g wider constriction at the velum by more lip protrusion, wider lip opening by more tongue retraction. This study investigates whether speakers use this relation under perturbation. Six speakers were provided with palatal prostheses which were worn for two weeks. Speakers were instructed to make a serious attempt to produce normal speech. Their speech was recorded via EMA and acoustics several times over the adaptation period. Formant values of /u/-productions were measured. Velar constriction width and lip protrusion were estimated. For four speakers a correlation between constriction width and lip protrusion was found. A negative correlation between lip protrusion and F1 or F2 could sometimes be observed, but no correlation occurred between constriction size and either of the formants. The results show that under perturbation speakers use motor equivalent strategies in order to adapt. The correlation between constriction size and lip protrusion is stronger than in studies investigat- ing unperturbed speech. This could be because under perturbation speakers are inclined to try out several strategies in order to reach the acoustic target and the co-variability might thus be greater.
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影响因子：
2.4
作者：
SAVARIAUX, C;PERRIER, P;ORLIAGUET, JP
通讯作者：
ORLIAGUET, JP
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DOI：
--
发表时间：
1994
期刊：
影响因子：
--
作者：
C. Espy;S. Boyce
通讯作者：
S. Boyce
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DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
Xinhui Zhou;C. Espy;M. Tiede;S. Boyce
通讯作者：
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影响因子：
2.4
作者：
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通讯作者：
Munhall, Kevin G.
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影响因子：
2.4
作者：
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通讯作者：
S. Boyce