Modeling and vocalization mechanism of bat throat vocalization
The establishment of a bat vocal tissue model is of great significance for the study of ultrasound mechanism and its application in smart devices.In this paper,three different vocal tissue models of bats were constructed by finite element method according to the characteristics of the vocal tissue structure of bat throat,and the influence of four factors of size,material mechanical parameters,tissue structure and tension on the characteristic frequency of vocal tissue were analyzed.The results showed that if a human vo-cal cord was used to scale down a bat's throat tissue model,the bat was unable to emit ultrasound.A semi-drum model with thyroid cartilage and vocal cords and a strip model with only vocal cords were constructed.The eigenfrequencies of the two models are similar and cannot reach the ultrasonic range within a reasonable parameter range.The characteristic frequency of the membrane-containing strip model can be adjusted by tension,which is consistent with the experimental results in the literature.Therefore,the vocal organization of the larynx of bats can be modeled and the mechanism of vocalization can be studied based on the membrane-containing strip model.
万方数据
维普
