Lag_polyfit New_polyfit

该程序模拟仿真16QAM传输系统，有助于理解调制过程。(Simulation program to realize 16QAM transmission system)

这是一个三次样条插值的.m程序 输入的是一个二维数组A(Nx2) 插值方法为: S(x) = A(J) + B(J)*( x - x(J) ) + C(J)*( x - x(J) )**2 +D(J) * ( x - x(J) )**3 for x(J) <= x < x(J + 1) (This is a cubic spline interpolation. M program input is a two-dimensional array A (Nx2) interpolation method: S (x) = A (J)+ B (J)* (x- x (J ))+ C (J)* (x- x (J))** 2+ D (J)* (x- x (J))** 3 for x (J) )

Abstract— We propose a simple speech compression algorithm using subband division and ADPCM (Adaptive Differential Pulse Code Modulation) algorithm. Although speech data are stored in a semiconductor memory device, its capacity and the available network capacity are limited. Therefore, it is necessary to compress the data as much as possible. The first is that the reconstructed datum must be understood correctly. Speech signal is compressed with a ratio of 1/4 using the proposed subband division and ADPCM (Adaptive Differential Pulse Code Modulation) algorithm.

几个非常实用的神经网络实例，是用matlab语言编写(Several very practical examples of the neural network, using matlab language worth learning!)

sar图像特征提取 合成孔径雷达图像特征sar图像特征提取 合成孔径雷达图像特征 (sar image feature extraction synthetic aperture radar image features sar image feature extraction feature synthetic aperture radar image)

kalman滤波 根据一实例进行kalman滤波的演示(kalman filting)

微分方程网格生成 计算传热学 离散方法 自适应网格(The differential equation of grid generation)

这种方法的痕迹，并构建一个表面，是本地垂直到轴突纤维 (This method traces and construct a surface,that is locally perpendicular to a axonal fiber )

仿真Chua电路的双卷波混沌吸引子。 要求：1、每个状态（x,y,z）分别随时间变化的曲线。 2、x-y，y-z，x-z的相图。 3、x-y-z的图形。(Circuit simulation Chua' s double scroll waves chaotic attractor. Requirements: 1, each state (x, y, z), respectively, a graph of changes over time. 2, xy, yz, xz phase diagram. 3 XYZ graphical.)

选择不同的两个函数做卷积运算，可供选择的函数有矩形窗函数，锯齿波函数和sinc函数，也可自行选择其他窗，观察选取函数的波形。(Choose a different function to do convolution function to choose a rectangular window function, ramp function and the sinc function, to choose the other window, observe the waveform of the selected function.)