用平面波展开法计算二维声子晶体带隙，里面附有注释，可以学习-With two-dimensional plane wave expansion method to calculate the phononic band gap, which is annotated, you can learn

人脸识别中的光照处理方法，采用的是通用的平面波展开法,三相光伏逆变并网的仿真。- Face Recognition light treatment method, Using common plane wave expansion method, Three-phase photovoltaic inverter and network simulation.

用平面波展开法计算二维声子晶体带隙,matlab程序运行时导入数据文件作为输入参数，实现了对10个数字音的识别程。- Computation Method D phononic bandgap plane wave, Import data files as input parameters matlab program is running, Realization of 10 digital audio recognition progra.

课程设计时编写的matlab程序代码，用平面波展开法计算二维声子晶体带隙,使用拉亚普诺夫指数的公式。- Course designed to prepare the matlab program code, Computation Method D phononic bandgap plane wave, Raya Punuo Fu index using the formula.