03test3-differential

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

find the threshold value of the gray scale image.

基于四阶统计量的盲源分离算法（它是特征矩阵联合对角化的简称）在特定情况下具有普遍的适用性(Fourth-order statistics-based blind source separation algorithm (which is the characteristic matrix joint diagonalization short) in a particular case of universal applicability)

说明：  软测量氧含量原始数据分工况聚类函数及代码(Raw data measuring oxygen content in the soft state clustering functions and code division)

It is a matlab code for K Nearest Neighbor algorithm.

基于matlab的遗传算法的例程的M文件(Matlab genetic algorithm based on M-file routines)

模式识别 MATLAB 的工具箱,比较实用,包括SVM,ICA,PCA,NN等等模式识别算法.(Pattern Recognition Toolbox for MATLAB, more practical, including the SVM, ICA, PCA, NN pattern recognition algorithm and so on.)

本程序包中涵盖了GSM整个通信链路的仿真，对于学习如何搭建通信链路有帮助(This package covers the GSM communication link throughout the simulation, for learning how to build communication links help)

The matlab source code.It s very usefulness.(The Matlab source code.It's very usefulnes s.)

利用MATLAB作为编译工具，将高维空间数据投影到低维空间。。(Using MATLAB as the compilation tools, data projection of high-dimensional space to low-dimensional space. .)