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首页> 外文期刊>The Journal of the Acoustical Society of America >Influence of supraglottal structures on the glottal jet exiting a two-layer synthetic, self-oscillating vocal fold model
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Influence of supraglottal structures on the glottal jet exiting a two-layer synthetic, self-oscillating vocal fold model

机译：声门上结构对退出两层合成，自激声折叠模型的声门喷射的影响

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A synthetic two-layer, self-oscillating, life-size vocal fold model was used to study the influence of the vocal tract and false folds on the glottal jet. The model vibrated at frequencies, pressures, flow rates, and amplitudes consistent with human phonation, although some differences in behavior between the model and the human vocal folds are noted. High-speed images of model motion and flow visualization were acquired. Phase-locked ensemble-averaged glottal jet velocity measurements using particle image velocimetry (PIV) were acquired with and without an idealized vocal tract, with and without false folds. PIV data were obtained with varying degrees of lateral asymmetric model positioning. Glottal jet velocity magnitudes were consistent with those measured using excised larynges. A starting vortex was observed in all test cases. The false folds interfered with the starting vortex, and in some cases vortex shedding from the false folds was observed. In asymmetric cases without false folds, the glottal jet tended to skew toward the nearest wall; with the false folds, the opposite trend was observed. rms velocity calculations showed the jet shear layer and laminar core. The rms velocities were higher in the vocal tract cases compared to the open jet and false fold cases. (C) 2008 Acoustical Society of America.
机译：使用合成的两层，自振荡，真人大小的人声折叠模型来研究声道和假褶皱对声门喷射的影响。该模型以与人发声一致的频率，压力，流速和振幅振动，尽管注意到模型和人的声带在行为上存在一些差异。获得了模型运动和流动可视化的高速图像。使用和不使用理想声带，带有和不带有错误褶皱的情况下，使用粒子图像测速仪（PIV）进行相位锁定的集合平均声门喷射速度测量。通过不同程度的横向非对称模型定位获得PIV数据。声门射流速度幅度与使用切除喉所测得的一致。在所有测试案例中均观察到起始涡旋。假褶皱干扰起始涡旋，并且在某些情况下，观察到涡旋从假褶皱脱落。在没有假褶的不对称情况下，声门喷口倾向于向最近的壁倾斜。对于假褶皱，观察到相反的趋势。均方根速度计算显示出射流剪切层和层状岩心。与开放式喷射和假折叠情况相比，声带情况下的均方根速度更高。 （C）2008年美国声学学会。

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