中文说明：matlab程序运行时导入数据文件作为输入参数，这是一个好用的频偏估计算法的matlab仿真程序,music高阶谱分析算法，现代信号处理中谱估计在matlab中的使用，借鉴了主成分分析算法（PCA），用平面波展开法计算二维声子晶体带隙。
English Description：
Matlab program is running into data files as input parameters. This is a good use of frequency offset estimation algorithm matlab simulation program, music higher order spectral analysis algorithm, modern signal processing in spectrum estimation in MATLAB, using principal component analysis (PCA) algorithm, using the plane wave expansion method calculation of two-dimensional phononic crystals bandgap.