chap4

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.)

从国外网站上搜来的图像分割算法中的区域生长法的Matlab源代码，可用于MRI图像等，效果不错，分享给大家！(share a matlab code of segmentation algorithm about growth in the region a foreign website ，which runs well.)

一个计算用的matlab小程序，希望大家喜欢，谢谢(A calculation of the matlab small program I hope you like it, thank you)

复杂背景下的中心定位圆心，霍夫变化的具体应用(Center positioning center of a circle, changing the specific application of Hough)

matlab code of A hybrid approach combining extreme learning machine and sparse representation for image classification. Engineering Applications of Artificial Intelligence 27 (2014): 228-235.(Luo, Minxia, and Kai Zhang. A hybrid approach combining extreme learning machine and sparse representation for image classification. Engineering Applications of Artificial Intelligence 27 (2014): 228-235.)

microstrip antenna fdtd code in matlab for antenna in 3D

fruit recognise use matlab

利用牛顿法估计广义线性模型参数，涵盖logistic模型和possion模型。matlab代码(Matlab code for estimating the parameters of the generalized linear regression models, including logistic and poission)

用Jacobi迭代法计算大型方程组的MATLAB函数文件(Jacobi iterative method using large calculation equations MATLAB function documents)

电力系统建模，非常适合于初学者及专业人士参考学习(Power system modeling, very suitable for beginners and professionals refer to learning)