Tracking high amplitude auto-oscillations with digital Fresnel holograms.
Tracking high amplitude auto-oscillations with digital Fresnel holograms.
复制标题
使用数字菲涅耳全息图跟踪高振幅自动振荡。
作者：
P. Picart;J. Leval;F. Piquet;J. Boileau;T. Guimezanes;J. Dalmont
提出了一种跟踪几百微米高振幅振动的方法。它表明，它是可能的，以数字菲涅耳全息图编码的自振荡的合成高振幅变形。该装置被应用于单簧管簧片在合成口中的自动振荡。通过使用由嘴传递的压力信号来执行振动的跟踪。实验结果显示了簧片运动的四个阶段，特别强调了簧片对吹嘴的冲击。
Method for tracking vibrations with high amplitude of several hundreds of micrometers is presented. It is demonstrated that it is possible to reconstruct a synthetic high amplitude deformation of auto-oscillations encoded with digital Fresnel holograms. The setup is applied to the auto-oscillation of a clarinet reed in a synthetic mouth. Tracking of the vibration is performed by using the pressure signal delivered by the mouth. Experimental results show the four steps of the reed movement and especially emphasize the shocks of the reed on the mouthpiece.