continuous-signal

利用文中命令码，可以在ANSYS中实现如何输入地震波，这对结构动力分析非常重要！(Using text command code, can be implemented in ANSYS how to input seismic wave, which is very important for structural dynamic analysis!)

说明：  MATLAB 神经网络用于数字识别源程序 手写数字识别(MATLAB neural network for digital identification of the source handwritten numeral recognition)

采用自相关函数法求基音周期，将采样得到的声音信号按每20ms一帧分为若干帧，并对每帧的序列求自相关函数，取自相关函数第一个最大值点算出基音周期，并以帧为横坐标，基音周期为纵坐标画图，并去除野点，最后取图中浊音部分即面积较大部分的值作为基音周期。(Using the autocorrelation function method pitch period, the sound signal is sampled every 20ms frame is divided into a plurality of frames, and each frame sequence uates the autocorrelation function, taken the first maximum point of correlation function calculated the pitch period, and frame as the horizontal, the vertical axis pitch drawing and remove outliers, and finally take the value of the area that is part of a larger portion of the figure as voiced pitch.)

a ant colony optimization(aco) for traveling salesman problem(TSP).implementation in matlab.type of file:m file

随机调制信号下的模拟ppm，在matlab环境中自动识别连通区域的大小,课程设计时编写的matlab程序代码，是机器学习的例程，进行波形数据分析,用MATLAB实现动态聚类或迭代自组织数据分析，包括随机梯度算法，相对梯度算法。( Random ppm modulated analog signal under Automatic identification in the matlab environment the size of the connected area, Course designed to prepare the matlab program code, Machine learning routines, Waveform data analysis, Using MATLAB dynamic clustering or iterative self-organizing data analysis, Including stochastic gradient algorithm, the relative gradient algorithm.)

说明：  Matlab中的画圆函数。Matlab本身没有画圆的函数。本附件实现了画圆函数。(Drawcircle function in Matlab. Matlab does not have drawcircle function. Of this Annex drawcircle realize the function.)

题目：有1、2、3、4个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？ 1.程序分析：可填在百位、十位、个位的数字都是1、2、3、4。组成所有的排列后再去 　　　　　　掉不满足条件的排列。 (Title: There are numbers 1,2,3,4, how many can be composed of distinct three-digit numbers without repetition? Is how much? 1. Program Analysis: fill in the hundred, ten, a bit of the numbers are 1,2,3,4. Composed of all the permutations and then remove the arrangement does not meet the conditions.)

Matlab教程，本教程主要讲述了如何从初学者变成精通Matlab的大师(Matlab teaching program)

用于分析标准接点的电力系统运行中功率的利用情况及损耗问题(Standards used to analyze the contact of the power system operation and utilization of power loss problem)

OFDM transmitter & receiver block implementation