一种新的单双侧息肉模型及其仿真

摘要

基于H-C的二质量声带模型,推导出单双侧声带息肉模型,利用病理声带振动方程从位移与声门体积速度的角度进行分析,并利用分岔图中的最大值得出单侧声带息肉模型中息肉尺寸对振动位移、声门下压和声门体积速度的影响.仿真结果表明,息肉尺寸越大,声带的振动幅度越小,对说话人发声的影响程度越严重,并结合临床诊断,证明此模型对于分析声带息肉病理的有效性.%Based on the H-C two-mass vocal cord model,the common vocal pathology model,single and double vocal cord polyp model are deduced.The vibration equation of the vocal cord is analyzed from the angle of displacement and the glottal volume velocity.The effects of the polyp size on the vibration displacement and the glottal pressure and the glottal volume velocity are obtained by using the maximum bifurcation diagram.The simulation results show that larger polyp size can induce more serious the impact on the speaker sound.Combined with clinical diagnosis,the effectiveness of model is proved for the analysis of vocal cord polyp pathology.