Characteristics of velocity profiles of speech movements.
Characteristics of velocity profiles of speech movements.
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DOI：
10.1037//0096-1523.11.4.457
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发表时间：
1985-08
期刊：
影响因子：
--
通讯作者：
K. Munhall;D. Ostry;Avraham Parush
中科院分区：
文献类型：
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作者：
K. Munhall;D. Ostry;Avraham Parush
通过检查元音和辅音产生过程中喉部和舌头的运动，研究了个体语言手势的控制。许多已知的改变言语持续时间特征的语言操纵（即，语音速率、词汇重音和音素同一性）进行测试。在所有情况下，观察到一致的模式，在喉和舌的姿态的运动学。最大瞬时速度与运动幅度之比，质量归一化刚度的运动学指标，被认为是系统增加的运动持续时间减少。具体地，最大速度与运动幅度的比率作为参数C乘以运动持续时间的倒数的函数而变化。数据与这种关系的一致性表明，持续时间的变化是通过基本速度形式的标量调整来完成的。这些发现与运动学变化是由咬合架刚度的规格产生的想法是一致的。
The control of individual speech gestures was investigated by examining laryngeal and tongue movements during vowel and consonant production. A number of linguistic manipulations known to alter the durational characteristics of speech (i.e., speech rate, lexical stress, and phonemic identity) were tested. In all cases a consistent pattern was observed in the kinematics of the laryngeal and tongue gestures. The ratio of maximum instantaneous velocity to movement amplitude, a kinematic index of mass-normalized stiffness, was found to increase systematically as movement duration decreased. Specifically, the ratio of maximum velocity to movement amplitude varied as a function of a parameter, C, times the reciprocal of movement duration. The conformity of the data to this relation indicates that durational change is accomplished by scalar adjustment of a base velocity form. These findings are consistent with the idea that kinematic change is produced by the specification of articulator stiffness.