气膜汽笛的发声研究

Sound production by balloon airhorn

在预实验的基础上建立了气膜汽笛发声的理论模型,实验验证了该理论模型并探究了影响气膜汽笛发声频率的因素.实验结果表明:气膜汽笛的发声频率与鼓风速度和容器长度无关,而与内管管长的倒数、气球膜半径的倒数呈线性关系,基频的平方与气球膜张力呈线性关系.

Based on preliminary investigations,a theoretical model of sound production by balloon airhorn was established.Different factors were explored in the experiments,and the results verified the theoretical model.The experimental results showed that the fundamental frequency of balloon airhorn had nothing to do with air blowing speed and the length of the container but was linearly related to the reciprocal of the tube length and the reciprocal of the radius of balloon airhorn.Square of the fundamental frequency of balloon airhorn was linearly related to the tension of the balloon membrane.