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This book is an introduction to two subjects:Matlaband numerical computing. This first chapter introducesMatlabby presenting several programs that inves- tigate elementary, but interesting, mathematical problems. If you already have some experience programming in another language, we hope that you can see how Matlabworks by simply studying these programs.

信号包络，提出信号包络，便于观察信号波动过程，非常有用(Signal envelope, put forward the signal envelope, easy to observe the process of signal fluctuations, very useful)

用计算机进行数字图像处理，使用matlab环境，对图像进行增强，平滑与锐化，分割，变换，压缩与编码，是平常实验的好选择。(Using computer digital image processing, the use of matlab environment, enhance the image, smoothing and sharpening, segmentation, transform, compression and encoding, is usually a good choice experiment.)

this code is mainly based on colour variance......

Multisim - Band Pass Filter

功率谱分析源代码，希望对大家有用功率谱分析源代码，希望对大家有用(Power spectrum analysis source code, hope to be useful)

三相电力有源滤波器，基于pq谐波电流检测的三相有源滤波器模型。输出为直流电压。(Three-phase Active Power Filter)

matlab应用程序接口API(matlab Application Programming Interface API)

将普通图划分为超图，并用矩阵表示。是一种简单而实用的方法。(The map is divided into ordinary hypergraph, and is represented by a matrix.)

matlab 程序代码 线性系统 龙格库塔法 可以解微分方程(matlab code linear system can solve differential equations Runge-Kutta method)