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本程序是设计巴特沃斯滤波器的代码，可以正常运行，实现巴特沃斯滤波器的基本功能。(butterworth filter)

用双线性变换法设计IIR数字滤波器 滤波就是将外界干扰的不需要的频率滤除掉，一面影响要测试数据的结果。比如如果是心电波的话，如果这是外界有很大的噪声干扰，滤波就是把不必要的信号给抑制掉，以便对心跳的正常测试。通过图比较，滤波后的明显比之前的要平滑，就是滤去干扰噪声的结果。采样间隔对实验有影响，取的过大会导致频率混叠。(Bilinear transformation method using digital filter IIR filter design is to outside interference filter out unwanted frequencies, while the impact to test data results. For example, if it is so heart waves, if this is a great noise outside interference, filtering is unnecessary signal out to the curb in order to test the normal heartbeat. Through chart comparison, after filtering than before to smooth the noise interference is the result of least squares. Sampling interval of the experiment affect take-off frequency of the General Assembly leading to aliasing.)

this code derivats image and get derivated image to you

计算hurst 指数的 matlab 程序(Hurst index calculation matlab program)

This InstructionVisitor executes the instructions that it visits on a given local variable frame and stack.

数字信号处理第十章 FIR滤波器的设计 代码实现(Digital Signal Processing Chapter FIR filter design code)

说明：  Matlab画瀑布图-福利叶变换-频谱图代码(Matlab drawing waterfall diagram welfare leaf transformation spectrum diagram code)

DGGBETA针对广义高斯，GGDEMO，，GGD中BETA估计，广义高斯参数估计，概率密度，(DGGBETA for Generalized Gaussian, GGDEMO,, GGD in BETA estimated generalized Gaussian parameter estimation, probability density,)

Matlab C++数学库对结构阵列的操作(======================================================================== CONSOLE APPLICATION : structArrayCreate ======================================================================== AppWizard has created this structArrayCreate application for you. This file contains a summary of what you will find in each of the files that make up your structArrayCreate application. structArrayCreate.dsp This file (the project file) contains information at the project level and is used to build a single project or subproject. Other users can share the project (.dsp) file, but they should export the makefiles locally. structArrayCreate.cpp This is the main application source file. ///////////////////////////////////////////////////////////////////////////// Other standard files: StdAfx.h, StdAfx.cpp These files are used to build a precompiled header (PCH) file named structArrayCreate.pch and a precompiled types file named StdAfx.obj. )

三相并联有源电力滤波器，基于瞬时无功理论的ip-iq电流检测法，三角波比较控制，抑制谐波电流(Three-phase shunt active power filter based on instantaneous reactive power theory, ip-iq current detection method, the triangular wave comparison control, inhibition of the harmonic current)