chapter7

当信号采样点数很少时，不能很好的恢复原模拟信号，导致原始信号中的一部分丢失。而当信号的采样点数增多到1024时，其分辨率很好，可以有效的区分信号的信息，当采样点数继续增多时，其恢复为原始模拟信号的精度越高且不丢失原始信号。(When the signal is small when the sampling points can not be good to restore the original analog signal, causing part of the original signal is lost. When the signal is increased to 1024 sampling points, its resolution is very good, can effectively distinguish the signal information, continue to increase when the sampling points, its back to the higher accuracy of the original analog signal without loss of the original signal.)

matlab 中的排列组合，阶乘等问题的详细描述与列子(the detailed description Liezi of matlab permutations and combinations, factorial)

遗传算法与偏最小二乘结合，应用于化学光谱的变量选择问题，希望对同学们有用。(Combination of genetic algorithm and partial least squares, used in chemical spectroscopy variable selection problem, I hope useful to the students.)

利用MATLAB解决<偏微分方程数值算法>中的一些问题,如插值求解(Use MATLAB to solve <partial differential equations numerical algorithm> in a number of issues, such as interpolation to solve)

matlab工具箱函数汇总，列出所以工具箱函数：统计工具箱函数、样条工具箱函数等(aggregate function matlab toolbox, toolbox functions are listed there: Statistics Toolbox functions, such as spline function toolbox)

生成以t0为中心的高斯调幅信号． y=AMGAUSS(N,t0),N产生信号的点数，t0时间中心，y返回信号产生的信号．(generation to t0 for the Gaussian signal amplitude. Y = AMGAUSS (N, t0), N signal from the score, time t0, y return signal signal.)

声音处理的MATLAB程序：LPCAR2RF( Convert autoregressive coefficients to formant freq+amp+bw )

风电功率系数的计算，应用经验公式，计算风力机吸收功率的系数(calculate coefficient of wind power )

矩阵分析的书其一些基本理论，是学习矩阵分析常用的书籍(Matrix Alfebra,theory,Computations,and applications in statistics,James E Gentle)

Program for genetic algorithm. Simple cross algorithm