refraction

说明：  一个统一的求无约束优化极值函数，方法名由参数传入例如：fmins(无约束方法，一维搜索方法，目标函数，初始点，精度) (A uniform evaluation of unconstrained optimization extremal functions, methods, for example, by an argument: fmins (unconstrained one-dimensional search method, the objective function, the initial point accuracy))

CVT_METRIC is a MATLAB program which computes a CVT (Centroidal Voronoi Tessellation) calculation under a spatially varying metric. d(a,b) = ( a - b ) * A * ( a - b )

1/3 oct filter code,used for frequency analysis(1/3oct matlab code,used for frequency analysis)

对于一段有杂音的音频信号，用过多种方式去除，建立多种经典滤波器，并比较优劣。(For a period of noise audio signal, used a variety of ways to remove the establishment of a variety of classic filter, and compare the pros and cons. )

用Matlab实现的孔洞填充算法，可实现类似Matlab imfill函数的功能，填充图像小孔洞(With hole filling algorithm implemented in Matlab, Matlab imfill function can achieve similar functionality,filling small holes in the image.)

MIMO-OFDM系统无线衰落信道容量分析，适合做无限通信的研究(Characterizing the Statistical Properties of Mutual Information in MIMO Channels)

说明：  无区间约束powell算法MATLAB实现(No interval constraint algorithm for MATLAB implementation powell)

gear cutting attachment ib lathe...milling and grinding

求解简单振动系统的响应（中心差分法，Wilson-θ法，Newmark-β法，Houbolt法）(Solving simple vibration response of the system (central difference method, Wilson-θ method, Newmark-β method, Houbolt method))

通过粒子群算法实现pid参数的自整定。内容涵盖matlab程序和SIMUILINK仿真。已调试。(PID parameter tuning of particle swarm optimization)