model11

某家电企业在全国二线城市的年销售量Y(单位：万台)与该城市人口数X1(单位:万人)以及该市人均月收入X2(单位:元)之间的关系，在某年对15个城市作了调查，得上述各量的观测值（见数据表data1.txt）(A household electrical appliance enterprises in the country in sales of second-tier cities, Y (unit: million units) and the urban population, the number of X1 (unit: million) and the city' s per capita monthly income X2 (unit: yuan) between, in a particular year made a survey of 15 cities, was the amount of the above observations (see data sheet data1.txt))

核心数据处理 核心数据处理 核心数据处理 核心数据处理 核心数据处理 核心数据处理 核心数据处理(Core data-processing core data processing core data-processing core data processing core data-processing core data processing core data-processing)

说明：  文件夹中内容为《MATLAB7.x数字信号处理》书中实例源代码，代码说明参见该文件夹下的“程序说明.doc”文件。(The contents of the folder as &quot MATLAB7.x digital signal processing,&quot the book source code examples, code instructions see the folder under the &quot description of the procedures. Doc&quot file.)

编写查找程序search，功能如下：给定任意有序数列，然后输入任意一数，用折半查找法找出该数在数列中的位置，若数列中有此数，则返回该数在数列中所在的位置，若数列中无此数，则返回-1 把给定值y插入到有序数组a（由大到小）中，插入后，数组中的数仍然有序 用递推法求解：一串字符以问号“？”结尾，顺序读入后反向输出，且统计其中字符的个数(prepare you search procedures, functions as follows : Given a series of arbitrary order, then enter an arbitrary number, using binary search method to find the few series in the position, if the series is this, Return of the few series in the location, if the series has been no such number,-1 is returned will be distributed to value y orderly array inserted into a (decreasing), insert after The array is an orderly with a few recursive method : a bunch of characters with a question mark "?" The end of the order after reading the reverse output and statistics on the number of characters)

this a very importantt tool to campare two couple of souds for example and can be used for a dissemblance test

Digital filter implementation examples

产生AM、USB、2FSK、2PSK信号，调制参数可以控制。(Produce AM, USB, 2FSK, 2PSK signal modulation parameters can be controlled.)

matlab svm的gui操控界面，绝对可用！！！能够实现分类预测等强大的功能，可以根据自身需求设置各种参数！(GUI control interface matlab SVM, absolutely available!!! To achieve functional classification prediction, powerful, you can set various parameters according to their own needs!)

先定义允许状态S={(x,y)|x=0或3,y=0,1,2,3 x=y=1,2}, 允许决策D={(u,v)|u+v=1,2},求dk<-D(k=0,1,2,…,n),使 状态Sk<-S按照状态转移律S(k+1)=S(k)+(-1)^k*dk,由初始状态 S1=[3,3]经有限步到达状态S(n+1)=[0,0].此为求解多步决策问题( First define to allow the state S = ((x, y) | x = 0 or 3, y = 0,1,2,3 x = y = 1,2), to allow the decision-making D = ((u, v) | u+ v = 1,2), seek dk < -D (k = 0,1,2, ..., n), so that state Sk < -S state transition in accordance with law S (k+1) = S (k )+ (-1) ^ k* dk, from the initial state S1 = [3,3] by the finite-step to reach the status S (n+1) = [0,0]. This is a multi-step decision-making problem solving)

自适应区域直方图均衡，用于图像增强，适用于超声图像，对超声图像的灰度增强又很好效果。(regional adaptive histogram equalization for image enhancement applies to ultrasound images, Ultrasound images of the Gray also enhanced good results.)