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概括了数模的几乎所有的经典算法，是建模必备的资料之一(Summarizes the number of modules in almost all of the classical algorithm, is one of modeling the information necessary )

基于MATLAB的DTMF拨号演示文件，可帮助理解DTMF的基本原理。(DTMF Presentations may help understand the basic tenets of DTMF.)

用基本粒子群算法来解决优化问题，本程序给出的是测试函数，根据需要可以自行更改适应度函数。(Using particle swarm optimization algorithm to solve the problem, this program is given a test function, you can change the fitness function according to their needs.)

digital signal processing and matlab

Step down DC DC converter

灰色模型 可以用来预测一段时间变量的变化量(The Gray model can be used to predict the amount of change of the period of time variable)

采用PDE法进行灵敏度过滤，实现悬臂梁的拓扑优化(Sensitivity filtering using PDE method to realize topology optimization of cantilever beam)

清华大学信号处理原理课程第一次实验，内容为产生固定波形以及声波的叠加(Signal processing theory, Tsinghua course first experiment, the content and the acoustic waveform to generate a fixed superposition)

说明：  在matlab中的图形图像处理函数详细列表，对于用matlab处理图像的朋友有用(The graphics in matlab a detailed list of image processing functions for image processing using matlab helpful friend)

1、使用牛顿法求sqrt（2）； 2、用牛顿法求 fx=(x-1)*(exp(x-1)-1)的误差以及误差比； 3、用牛顿法及其他两种方法求 fx=x^4-4*x+x^2的重根 (1, using Newton' s method for the sqrt (2) 2, using Newton' s method for the fx = (x-1)* (exp (x-1)-1) error and error ratio 3, using Newton' s method and the other two method, to calculate fx = x ^ 4-4* x+ x ^ 2 re-root)