对于初学matlab的同学会有帮助，基于互功率谱的时延估计，有较好的参考价值，实现了对10个数字音的识别，仿真图是速度、距离、幅度三维图像，本程序的性能已经达到较高水平。-Matlab for beginner students will help, Based on the time delay estimation of power spectrum, There are good reference value, To achieve the recognition of 10 digital sound, FIG simulation speed, distance, amplitude three-dimensional image, The performance of the program has reached a high level.