Fib_Complexity

音频信号降采样程序 支持48k->8k 24k->8k 8k->1k 的降采样.实现方法,先做低通滤波,再做采样点抽取.低通滤波起使用67点FIR,系数由matlab使用窗函数法生成 (Audio signal down-sampling procedures to support the 48k-)

基于图像处理的matlab基本原代码，对初学有很大的帮助，还有很多事例供参考和练习(Based image processing matlab source code, a great help for beginners, there are a lot of examples for reference and practice)

差值、函数逼近、矩阵特征值计算、数值微分、数值积分、方程求根、非线性方程组求解、线性方程组直接法、线性方程组迭代法、随机数生成、特殊函数计算、常微分方程初值问题、偏微分方程数值解法、数据统计和分析(Difference, function approximation, eigenvalue calculation, numerical differentiation, numerical integration, finding roots of equations, nonlinear equations, linear equations, direct method, iterative linear equations, random number generator, a special function to calculate , initial value problems of ordinary differential equations, numerical solution of partial differential equations, statistics and analysis)

数值分析 通过matlab的实现。由多元插值等程序组成 (matlab numerical simulation)

由matlab编译，一个很好的计算多重积分的模块。(From matlab compiler, a good module for calculating multiple integrals)

mimo信道、滤波器等实用的仿真还附有对应的说明文件。(simulation of mimo channel filters and so on with reference)

说明：  pca、svd、mds 数据降维，用来对数据进行预处理 新人学习，叨扰(pca data dimension reduction)

best squre approach of function(best approach of function squre)

说明：  hallen equation :this equation is modeled as matrix equation (the voltage is equal two the current multiplied by resistance),the object is to find the current distribution.

四阶龙格库塔法解微分方程组实例，没有调用函数，而是在基本含义基础上进行编译，有助于对龙格库塔法的理解。(Fourth-order Runge-Kutta method for solving differential equations instance, did not call the function, but on the basis of the basic meaning of compiler, contribute to the understanding of Runge-Kutta method.)