crc_rec_fin

说明：  用matlab实现音频信号在频率上的处理( Programs with matlab realizes the tonic train signaling equalization treatment )

在故障诊断中，对振动信号进行小波分析时候需要用到的小波尺度谱应用程序。(In fault diagnosis, wavelet analysis for vibration signal when the need to use the application spectrum of the wavelet scale.)

计算混沌序列的分形维数，内附有洛伦兹序列和哈农序列，可以根据自己所需，产生感兴趣的序列，自行添加。(Fractal dimension calculation chaotic sequence, the sequence is enclosed and Hanon Lorentz sequence, can according to their required to produce a sequence of interest, add their own.)

一本Matlab的经典教材，适合刚入门的新人，可以帮你解决初期遇到的很多问题！(Matlab a classic textbook for newcomers just getting started, you can help solve many problems encountered early!)

说明：  有图像分割的各种算法：分水岭 最大类间 最大熵法等等源程序(With image segmentation algorithms: the watershed between the largest class of maximum entropy source, etc.)

for fem matlab for solving all 2D and 3D problem

QAM16在通信系统中是一种简单的调制方式，可以提高频谱利用率，该程序可以恢复QAM16的星座图(QAM16 in a communication system is a simple modulation, spectral efficiency can be improved, the program can resume constellation QAM16)

％radon transform clear all ％ N=800 n=1:N fs=200 t=n/fs x1=exp(j*2*pi*(5*t+0.5*5*t.^2)) x2=exp(j*2*pi*(5*t+0.5*15*t.^2)) x=x1+x2 ％N=length(x) ％ ambifunb(x ) ％*****************************************RAT naf=ambifunb(x) htl(abs(naf)) ％ [wh,rho,theta]=htl(abs(naf)) colormap([0,0,0]) ％ xlabel( 极半径 ) ％ ylabel( 角度 ) ％**************************************％找出峰值点的坐标,计算初始频率和调频斜率(正确) ％找出峰值点的坐标 b=max(max(wh)) [u,a]=find(wh>=0.8*b) ( Radon transformclear all N = 800 n = 1: N fs = 200 t = n/fs x1 = exp (j* 2* pi* (5* t+ 0.5* 5* t. ^ 2)) x2 = exp ( j* 2* pi* (5* t+ 0.5* 15* t. ^ 2)) x = x1+ x2 N = length (x) ambifunb (x)***************************************** RATnaf = ambifunb (x) htl (abs (naf)) [wh, rho, theta ] = htl (abs (naf)) colormap ([0,0,0]) xlabel (polar radius) ylabel (angle)************************************** to find the coordinates of the peak point, calculating the initial slope of the frequency and FM (right) find the peak point of the coordinates b = max (max ( wh)) [u, a] = find (wh)

buck circuit for open loop

Wiley出版社的《原子光子相互作用》的经典书籍(a classic book on atom-photon interaction)