中文说明：基于互功率谱的时延估计，仿真图是速度、距离、幅度三维图像，一个计算声子晶体结构的一维传递矩阵法,算法优化非常好，几乎没有循环，matlab小波分析程序，构成不同频率的调制信号。
English Description：
Based on the cross power spectrum time delay estimation, the simulation diagram is speed, distance, magnitude, 3D image, a calculating the one-dimensional phononic crystal structure of transfer matrix method, very good algorithm, almost no circulation, matlab wavelet analysis program, constitutes the different frequency modulation signal.