456

绘制3层正弦信号，对之进行小波分解（5层）重构5层逼近信号和细节信号。(Draw 3-layer sinusoidal signals, the wavelet decomposition (5 layer) Reconstruction of 5-layer approximation signal and detail signal.)

This code is neural network (Matlab). The objective function is used the sigmoid.

放大显示matlab输出图像局部区域，放大区域可以随意在原图像拖动，相应的放大区域会显示出来，同时显示放大区域和源图像。(Magnified display matlab output image local area, zoom in the region can be free to drag the original image, the corresponding amplification area will be displayed, while displaying the enlarged area and source image.)

ofdm仿真程序，用于wimax链路级仿真。比较简单(OFDM simulation program for wimax link level simulation. Relatively simple)

digital audio signal processing

先进PID控制及其MATLAB仿真详细教程(Advanced PID Control and MATLAB Simulation of a detailed tutorial)

DFT and its circular nature

试验，使用兰特X次生成相同的价值观，兰特（1，X）的(Tests that using rand X times generates the same values as rand(1,X))

可以绘制变量的三维及四维散点图的matlab子程序，如饱和度等(plots the values in vector v colour coded at the positions specified by the vectors x, y, and z in a 3-D axis system. A colourbar is added on the right side of the figure.)

整流器模型mdl模型，希望对初学者理解整理过程有用(Mdl model rectifying model, I hope useful for beginners to understand the process)