摘要
发声过程中声带组织振动的黏膜波测量对于声带组织力学特性和病理机制研究具有重要意义。本研究利用多普勒激光测振(Laser Doppler Vibrometer,LDV)和电声门图时间同步方法,对声带上表面的振动过程进行了重建,并基于该结果估计了黏膜波传播速度。通过离体犬喉发声实验,激光测振方法能够得到与高速光学方法相一致的黏膜波速度估计,并且能够重建不同时刻的声带上表面形态,证明了该方法应用于声带上表面振动特性研究的可行性和有效性。然而,由于单点测振的局限和时间同步的要求,稳态发声是保证该方法测量准确性的重要条件。
Measurement of mucosal wave velocity on the vocal fold surface is important and useful in investigation of vocal fold tissue mechanics and diagnosis of vocal fold diseases.In this work,Laser Doppler Vibrometer(LDV was used to measure the vibration of the superior surface of the vocal fold,finally reconstructing the shape variation of the superior surface and estimating the mucosal wave velocity through the electroglottography-based time-domain synchronization.In the experiment of excised canine vocal fold vibration,the mucosal wave velocities estimated using LDV were compared equally to those measured by high-speed video.Additionally,the method is able to capture the shape changing of the superior surface in high time resolution.However,because of the limit in single point measurement and time synchronization,the vocal fold vibration should be stable during the measurement to reduce the measurement error.
作者
吴亮
叱干鹏举
王素品
万明习
WU Liang;CHIGAN Pengju;WANG Supin;WAN Mingxi(Department of Biomedical Engineering Xi'an Jiaotong University,Xi'an 710049)
出处
《声学学报》
EI
CSCD
北大核心
2020年第1期124-130,共7页
Acta Acustica
基金
国家自然科学基金项目(11874049,81771854,11404256)资助.
作者简介
通讯作者:万明习,mxwan@mail.xjtu.edu.cn
