设计了IIR低通滤波器，需要的可以参考一下子的

最新的，很好的PDF阅读器，无需要安装，单文件直接运行并注册文件类型-The latest, very good PDF reader, no need to install a single file to run directly to and register file types

构造一组输入为白噪声加三个频率非常接近的正弦波，其信噪比为10dB，观测长度为256。试分别用普通AR谱估计和采用功率噪声抵消算法的AR谱估计估计这组信号的频率，并比较结果。-constructed a group of white noise input plus three very close to the frequency sine wave, the signal-to-noise ratio of 10dB. Observing length of 256. Were used to test the general AR spectral estimation using power and noise canceling algorithm for the estimation of AR spectrum estimation of this group of signal frequency, and the results of the comparison.

使用的是最小误差法的插补程序，在理论是非常先进的插补程序了，本程序应用于工业打标机-use is the smallest error method of interpolation procedures, the theory is very advanced interpolation procedures. The procedures used in industrial marking machine

建立一个类，可以实现画斜椭圆，里面重载多个函数，可以根据你的需要进行绘制斜椭圆！-The establishment of a category, you can realize oblique oval painting, which more than overloaded function, according to your need for rendering oblique elliptical!

文件操作相关-operation related documents!

网站开发的相关代码，主要是实现了一个网站的首页，是关于健康咨询的一个网站-Web site development related to the code, mainly to achieve a site" s home page, is a web site on health consultation

讲述了用proel进行电路板设计的具体流程，以及每一步的优化。-Proel carried out on the circuit board with the design of specific processes, as well as the optimization of each step.

参加运动会的n个学校编号为l～n。比赛分成m个男子项目和w个女子项目， 项目编号分别为l～m和m＋1～m＋w。由于各项目参加人数差别较大，有些项目 取前五名，得分顺序为7，5，3，2，1；还有些项目只取前三名，得分顺序为5， 3，2。设计一个统计系统按名次产生各种成绩单、得分报表。 -To participate in the Games n school numbered l ~ n. Competition is divided into m men and a woman w projects numbered l ~ m and m 1 ~ m w. As a result of differences in the number of participants larger projects, some projects from the top five scores in order of 7,5,3,2,1 also some of the items, only the top three scores in order of 5,3,2. Design a statistical system rankings produced by a variety of report card, scoring statements.

c语言实现的fft变换，有兴趣的朋友可以-c language of fft transform, interested friends can see. .

用于GIS(全球地理系统)的分析和处理的代码。-For GIS (global geographic system) analysis and deal with the code.