声动力学和收-分离的振荡性眼球:使用粘膜波模型和合成基摩图的基本见解
Jan G Švec1, S Pravin Kumar2, Ondřej Vencálek3
1Voice Research Lab, Department of Experimental Physics, Faculty of Science, Palacký University, Olomouc, Czechia.
概括
这项研究量化定义了声音障碍中的收-分歧 (CODI) 波形. 大多数模拟的喉波形不符合CODI条件,突出了声动力学的变化.
科学领域:
- 语音的生物力学
- 声学语音学的声音学.
- 语音障碍研究 语音障碍研究
背景情况:
- 眼球膜理想情况下表现出因粘膜波引起的收开放和分离关闭.
- 这种理想的动力学模式可能不适用于语音障碍.
- 需要对收-分歧 (CODI) 波形进行定量识别.
研究的目的:
- 为了定量定义和识别CODI波形.
- 为了研究CODI波形发生的动力学条件.
- 了解与语音障碍相关的喉波形变异.
主要方法:
- 模拟了3,125个喉波形,使用动态声模型和合成基摩图.
- 多种参数,包括上声和下声边缘幅度 (A_U,A_L),垂直相差 (VPD),口腔半径 (H_W) 和声前口腔收角 (ψ_CVG).
- 定义的CODI波形由上和下边缘分数 (Q_U,Q_L) 等于1.
主要成果:
- 当A_U和A_L相似时,CODI波形最有可能发生, ψ_CVG接近0°,H_W<0.45毫米,VPD>50°.
- 88%的模拟波形不符合CODI条件.
- 非CODI波形发生在下边缘在关闭时被隐藏或上边缘在打开时不在喉边缘时.
结论:
- 这项研究为了解喉波形变异性奠定了基础.
- 提供了与声运动相关的粘膜波的外观的洞察力.
- 有助于理解失调的语音产生.
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