digital-lowpass-filter_butter

this is about risk managment problems....

该文件是定性趋势分析代码，可以自动根据准确率要求自动选择阈值，拟合数据变化趋势，预测数据变化(This file is a qualitative trend analysis code that can automatically selected automatically based on the accuracy of the threshold requirements, fitting the data trends, forecasting data changes)

一种改进的方法，自适应的高斯chirplet分解信号，文章很深入的讲解了退到过程。(a fast refinement for adaptive gussian chirplet decoposition)

这是关于ica的程序,希望对大家有用，谢谢，下次继续(This is ICA.)

地球物理地震学——基于FK域的波场分离，也可应用于滤波(FK domain wave field separation, can also be applied to filter)

1.实验目的：绘制分形图案并分析其特点。  2.实验内容：绘制Koch曲线、Sierpinski三角形和树木花草图形，观察这些图形的局部和原来分形图形的关系。  3.实验思路：利用函数反复调用自己来模拟分形构造时的迭代过程，当迭代指标n为0时运行作图操作，否则继续迭代(1. Purpose: Draw fractal patterns and analyze their characteristics. 2. Experiment: Draw Koch curve, Sierpinski triangle graphic flowers and trees, observe the relationship between the local and original graphics fractal graphics. 3. Experiment idea: using the function calls itself repeatedly to simulate the iterative process when the fractal structure, when the iteration index n is plotted 0:00 run, otherwise continue iterating)

直流信号和阶跃信号的傅里叶分析和频谱图.(Fourier analysis and spectrogram DC signal and step signal.)

smith算法进行改进，可以有良好的结果，是smith的一种很好改进方法。(smith)

项目中宽带噪声干扰性能的研究，有详细的MATLAB代码以及注释(Broadband noise performance of the project research, a detailed MATLAB code and comments)

Transmission for a multilayer structure versus frequency(GHz)