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说明：  在弹簧片上放置一个反射镜,反射镜被弹簧振动. 本程序就是模拟这一过程.(In spring place a mirror, mirror vibration by spring. This procedure is to simulate the process.)

说明：  英文书《Digital Signal Processing with Examples in MATLAB》附带的MATLAB实例(English book )

matlabsummary,是一本简单介绍matlab的概要性的书籍(matlabsummary，I think it is a very good book.)

this file is for restructure

说明：  克里金插值matlab代码，内附实例说明，便于理解。(Kriging interpolation matlab code, with examples, easy to understand.)

说明：  mmea进化算法，学习的典范，可以直接运行的，呵呵(mmea evolutionary algorithm, learning model, can run, huh, huh)

锁频环又称为自动频率控制（AFC）环，其利用反馈回路对输入频率变化进行调整，最后达到对频率的跟踪，广泛应用于雷达，卫星导航等领域对多普勒频率的跟踪。(Locked loop, also known as automatic frequency control (AFC) loop, the use of feedback loop to adjust the input frequency changes, and finally achieve frequency tracking is widely used in radar, satellite navigation and other fields on the Doppler frequency tracking.)

使用mat2huff进行编码，进一步说明霍夫曼编码的压缩性能！显示其压缩比例，以及其图像的对比！(Encoded using mat2huff to further clarify the Huffman coding compression performance! Shows the compression ratio and the image contrast!)

国外高校老师编写的语音信号特征提取程序，非常实用初学者研究( [E, V, A, P] = analysis(x, N, U, M) extracts vocoder parameters E, V, A, and P from the speech signal x on a frame by frame basis. N is the analysis frame length, U is the update length, and M is the order of the linear prediction analysis. The return arguments are the extracted parameters, where E, V, and P are vectors with "n_frames" (the number of analysis frames, see code below) elements, A is a (n_frames, M+1) size matrix (includes the leading 1 of the polynomial).)

实现AWGN信道下的BPSK调制，如何经过过采样，过滤波器等操作，能够为初学通信的人提供参考(Simulation program to realize BPSK transmission system)