摘要
声波在两种介质的交界面透射和反射时 ,借鉴机械四端参数法 ,利用声学边界条件 ,引入了四端参数矩阵 ,建立四端参数模型。通过对四端参数矩阵的分析 ,探讨了在简谐平面波垂直入射的条件下 ,声波在多层介质中的传播特性 ,并推导出声透射系数和声反射系数的一般计算公式。
A model of four-pole parameters,analogical with the mechanical four-pole parameters method,is introduced to analyze the transmission and reflection of acoustic wave in the interface of two different mediums according to the boundary conditions.The propagation of acoustic wave in multilayered medium is studied by the analysis for the four-pole parameters matrix on the condition of vertical incidence of a simple-harmonic plane wave,and the general formulas of the transmission coefficient and the reflection coefficient are presented.
出处
《噪声与振动控制》
CSCD
2002年第4期7-9,共3页
Noise and Vibration Control
