中文摘要：

着重研究语速对语音生成的影响。过去有不少人对此进行了研究，指出语速的变化对元音和辅音的运动产生了不同的影响，但是具体是什么样的影响并没有明确指出。基于DIVA模型，通过修改ODV和AVV活动的公式对语速对元音和辅音运动产生的影响进行了研究和探讨。仿真实验表明，语速的增加导致了辅音运动速度的增加，但元音运动速度只增加了少量的值，有时甚至还会减小。最终得出的结论是：尽管语速对元音和辅音的运动速度产生了不同的影响，但最大速度与运动距离比值的增量却是大致相同的。

英文摘要：

Mainly study the speaking rate effects to the production of speech sounds. Many researchers in the past twenty years has investigated this,and they pointed that changes in speaking rate have differential effects for the movements corresponding to vowels and conso- nants of speech sounds,but they didn＇t point what the exact effects are. Based on the DIVA （ Directions Into Velocities of Artculators ） model, discussed and investigated these effects by modifying the ODV （ Orosensory Direction Vector） and AW （ Articulator Velocity Vector） equations. The simulation results show that increasing rate causes an increase in the velocities of movements corresponding to consonantal gestures,but it causes less of an increase,or even a decrease,in the velocities of movements corresponding to vowel gestures. The final conclusion is：despite changes in speaking rate have differential effects for the movements correspondng to vowels and consonants, the increase in ratios of maximum velocity to movement distance for the vowel and consonant gestures are almost same to vowels and consonants.