中文说明： 语音信号的采集与处理，数字信号处理课设，Matlab实现界面友好，应用小区域方差对比，程序简单，图像的光流法计算的matlab程序,用平面波展开法计算二维声子晶体带隙,是一种双隐层反向传播神经网络。
English Description：
Acquisition and processing of the speech signal, digital signal processing course and Matlab realization of user-friendly, small regional variance comparison program is simple, the image of the MATLAB program for calculating optical flow method, using the plane wave expansion method for calculation of band gap of two-dimensional phononic crystals, is a kind of back-propagation neural network with double hidden layer.