The context of this study is the physical modeling of speech production. The objective is, by using a mechanical replica of the vocal tract, to test quantitatively an aerodynamic model of the interaction between the vocal folds and the vocal tract during the production of a vowel-voiceless plosive-vowel sequence. The first step is to realize acoustic and aerodynamic measurements on a speaker during the production of an /apa/ sequence. The aperture and width of the lips are also derived from a high-speed video recording of the subject's face. Theoretical models to describe the flow through the lips and the effect of an expansion of the supraglottal cavity are proposed and validated by comparison with measurements made using a self-oscillating replica of the phonatory system. Finally, using these models, numerical simulations of an /apa/ sequence are performed using the measured lip parameters as the only time-varying input parameters. The results of these simulations suggest that the realization of an occlusion of the vocal tract produces a passive increase in glottal area associated with a voice offset and that the expansion of the supraglottal cavity is responsible for the extension of the phonation up to 40 ms after closure of the lips. (C) 2016 Acoustical Society of America.
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机译：这项研究的背景是语音产生的物理模型。目的是通过使用声道的机械复制品，来定量测试在产生元音-无声音的爆破音-元音序列期间，声带与声道之间相互作用的空气动力学模型。第一步是在制作/ apa /序列期间实现扬声器的声学和空气动力学测量。嘴唇的光圈和宽度也来自拍摄对象面部的高速视频记录。提出并描述了理论模型，该模型描述了通过嘴唇的流动和声门上腔扩张的影响，并与使用发声系统的自振荡复制品的测量结果进行了比较，从而对其进行了验证。最后，使用这些模型，使用测得的嘴唇参数作为唯一随时间变化的输入参数，对/ apa /序列进行数值模拟。这些模拟的结果表明，声道的闭塞的实现会导致与声偏相关的声门区域的被动增加，并且声门上腔的扩张负责闭合后40毫秒内的发声扩展嘴唇（C）2016年美国声学学会。
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