模拟计算声波在声子晶体波导中的传播特性，可以得到在法向上声压的强度变化图.-Simulated sound waves in the transmission characteristics of phononic crystal waveguide, can get up in the intensity of the sound pressure variation

用comsol模拟计算声波在声子晶体中的定向传播特性。可以得到任意一点声波的强度。

对波动方程进行隐式差分，利用MATLAB编程进行求解，模拟波的传播-Volatility implicit difference equation, using MATLAB programming solver to simulate wave propagation