Simulation-of-communicati

main in speech processing

fractal graphical user interface

说明：  利用矩量法求解Hallen方程 画出场的电流分布(Hallen method of moment equations current distribution appearances painting)

此程序是电容成像技术的成像算法，其中五种算法，lBP等(This program is capacitance imaging technology imaging algorithm, including five kinds of algorithm, lBP, etc)

律u律pcm编码 若输入A律PCM编码器的正弦信号为x(t)=sin(1600πt),采样序列为x(n)=sin(0.2πn),n=0,1,2,…,10，将其进行PCM编码，求出编码器的输出码组序列y(n)。 要求：1) 直接采用A律扩展器函数求解上述问题。 2）使用13折线法近似A律PCM 求解上述问题。 3）计算量化误差。(Law a law pcm coding If the input A-law PCM encoder is sinusoidal signal x (t) = sin (1600πt), for the sample sequence x (n) = sin (0.2πn), n = 0,1,2, ..., 10, it will be PCM coding to obtain the coded output code group sequence y (n). Requirements: 1) directly A-law expander function to solve the above problems. 2) using a 13 fold line approximation A-law PCM to solve the above problems. 3) calculating the quantization error.)

文中主要介绍使用Matlab进行图像处理的各种常用函数，还有一个图像处理工具箱的一些用法。(The paper introduces the use of Matlab for image processing a variety of common functions, and a number of uses image processing toolbox.)

ch3=softt(h3,thr1 clear clc I=imread( lena512.bmp ) imshow(I) I=double(I) II=I+30*randn(size(I)) figure imshow(II,[]) [a1,h1,v1,d1]=dwt2(II, sym8 ) [a2,h2,v2,d2]=dwt2(a1, sym8 ) [a3,h3,v3,d3]=dwt2(a2, sym8 ) sigma=median(abs(d1(:)))/0.6745 x=3*sigma thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x 小波图像去噪( ch3=softt(h3,thr1 clear clc I=imread( lena512.bmp ) imshow(I) I=double(I) II=I+30*randn(size(I)) figure imshow(II,[]) [a1,h1,v1,d1]=dwt2(II, sym8 ) [a2,h2,v2,d2]=dwt2(a1, sym8 ) [a3,h3,v3,d3]=dwt2(a2, sym8 ) sigma=median(abs(d1(:)))/0.6745 x=3*sigma thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x )

Jerk混沌系统产生的模拟信号转化为二进制的方法 程序可以正常运行(Jerk chaotic system analog signal into a binary approach generated program works)

说明：  以股票交易为例，用SVM网络回归预测，内有说明(SVM network regression prediction, with instructions)

说明：  Scilab基本算法语句与基础操作指南,帮助新手学习scilab应用(basics in Scilab)