人喉声带振动模拟实验平台的研究  

The Research of Simulation Experimental Platform on Human Vocal Cords

作　　者：周晨[1] 陈东帆[1] 李睿强[1] 万勤[1] 

机构地区：[1]华东师范大学言语听觉科学教育部重点实验室,上海200062

出　　处：《中国医学物理学杂志》2014年第6期5322-5327,共6页Chinese Journal of Medical Physics

基　　金：国家自然科学基金青年基金项目(81301678)

摘　　要：目的:在人喉声带生理与病理研究中,针对声带的难以侵入性的问题,设计了声带振动模拟实验平台,对复杂的声带振动进行仿真实验,从而为临床发声疾病的诊疗提供参考。方法:基于生物力学原理,从粘稠性理论出发,首先建立了声带的"质量—弹簧—阻尼"模型,设计了完整的装配体结构,然后为了提供空气动力,模拟初始发声环境,设计了管道型振动模拟实验平台,系统集成了计算机、鼓风机、传感器、动态信号测试仪器等多种硬件设备,最后在实验平台下,控制多种变量对声带振动模型进行仿真实验,得出多组动态信号测试数据。结果:声带模型的一阶固有频率值的大小由弹簧片硬度、刚度决定,声带模型所处边界条件和受载情况对其也有一定影响。在特定的弹簧片尺寸、物理模型类型及风载作用组合下,实验平台能够模拟出与成年男性基音频率相近的声音信号。结论:声带振动模拟实验平台能够为声带模型的实验提供支持,获取相关实验数据,为言语障碍及声带疾病的临床诊治提供依据。Objective：In the study of physiology and pathology of human vocal cords, in view of the difficult problems to invasive vocal cords ,this paper design a simulative experiment platform, which imitated the vocal cord vibration, a simulation experiment was carried out on the complicated vocal cord vibration, so as to provide reference for clinical diagnosis and treatment about voice. Methods： Based on biomechanical principle, starting from the theory of viscosity, firstly, the ＂weight - spring - damper＂ model of vocal cord and a complete assembly structure were established. Then in order to provide air power and initial sound environment, a pipe type simulation experiment platform is designed, which integrated with computer, blower, sensors, dynamic signal testing instrument and other hardware devices. At last, control experiment platform for a variety of variables dynamic signal testing and get multiple sets of data. Results： The first-order natural frequency values of the？model is determined by the spring of hardness, stiffness, boundary conditions and loading the condition of a vocal model has some influence on its. It is concluded that the virtual experiment platform can simulate the same fundamental frequency of the vocal cord vibration when under certain combinations of parameters, which is the most close to the real human body. Conclusions： The human vocal fold experimental platform can get many useful experimental data and find the generation of the sound and support disease research.

关 键 词：声带 模拟实验平台 仿真原理 动态信号测试 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] R318.6[自动化与计算机技术—计算机科学与技术]