中文说明：进行波形数据分析,一种流形学习算法（很好用），调试通过可以使用，matlab程序运行时导入数据文件作为输入参数，处理信号的时频分析，用平面波展开法计算二维声子晶体带隙。
English Description：
The wave data analysis, a manifold learning algorithm (very good), debugging can use, MATLAB import data file when the program is run as an input parameter, time-frequency analysis for signal processing using plane-wave expansion method for calculation of band gap of two-dimensional phononic crystals.