shuzi

Infinite impulse response (IIR) is a property of signal processing systems. Systems with this property are known as IIR systems or, when dealing with filter systems, as IIR filters. IIR systems have an impulse response function that is non-zero over an infinite length of time. This is in contrast to finite impulse response (FIR) filters, which have fixed-duration impulse responses. The simplest analog IIR filter is an RC filter made up of a single resistor (R) feeding into a node shared with a single capacitor (C). This filter has an exponential impulse response characterized by an RC time constant.

用NRTL模型，求解萘在一种离子液体中的活度系数。 求解非线性方程、非线性拟合都可以实现。 稍微对比了一下，发现还是拟合的结果好些。 Matlab源程序及结果在附件里(with NRTL model for naphthalene in an ionic liquid in the activity coefficient. Solve nonlinear equations, nonlinear fitting can be achieved. Contrast slightly for a moment and found that the fitting or better results. Matlab source and the results of the annex)

解决麦克斯韦的matlab源文件，简洁而且实用(Matlab solve Maxwell)

说明：  实现语音信号的分帧，也可以对其他信号进行分帧(Sub-frames of voice signals, other signals can also be sub-frame)

transfer function of a system

介绍基于DWT变换的数字水印的电子文档，并付matlab开发的源码(Introduction Based on DWT transform digital watermarking of electronic documents, and pay a matlab source development)

这是光学激光仿真相关书籍的源代码，里面有全面的关于激光器以及介质仿真的基本代码，这是第三部分的内容，总共有6个部分。(This is the simulation of the optical laser source code related books, which has comprehensive information regarding the lasers and media simulation of the basic code, which is the third part of the content, a total of six sections.)

matlab建模的十大思想的实现，帮助同学在建模中拿到好的成绩(Matlab modeling ten ideas to help students get good results in modeling)

对于svm进行可视化，清晰地划分了分类超平面以及各个类别(Visualization for SVM, a clear division of the classification hyperplane and each category)

用matlab实现Romberg积分，该算法简单易懂，容易初学者掌握(Romberg Integral using matlab，easy to understand)