Speech_Coding_Using_Sub-Bands

complex network routing based on the average waiting time of each node

PSK31 Model with Symbol Timing and Carrier Recovery(This model implements a communication standard known as PSK31. The transmit portion of the model can either synthesize the PSK31 signal, or use real world signals that were captured as Wave files. The receiver features include: Automatic Frequency Control, Automatic Gain Control, Symbol Timing recovery with a fractionally spaced Farrow interpolator, Decision Directed Carrier Phase Lock Loop, dbsk or dqpsk demodulation with FEC. References are provided in the Model.)

MATLAB插值与拟合（线性拟合函数：regress() 多项式曲线拟合函数：polyfit( ) 多项式曲线求值函数：polyval( ) 多项式曲线拟合的评价和置信区间函数：polyconf( ) 稳健回归函数：robust( ) 向自定义函数拟合 ）(MATLAB interpolation and fitting (linear fitting function : regress () function polynomial curve fitting : polyfit () polynomial curve function : polyval () polynomial curve fitting and evaluation function confidence interval : polyconf () function Robust Regression : robust () function to define fitting))

finding critical time in a power system

1、不同阶次模拟巴特沃兹滤波器的频率响应 2、根据模拟滤波器指标，设计低通巴特沃兹滤波器 要求通带截止频率 fp = 5kHz, 通带最大衰减 ɑp =2dB， 阻带截止频率 fs= 12kHz, 阻 带最小衰减ɑs =30dB,按照上述指标设计巴特沃兹低通滤波器。 3、给定模拟滤波器，按照不同采样频率设计数字 IIR，观察采样频率对设计结果的影响 已知模拟滤波器传输函数 H(s)为 2 0.5012 ( ) 0.6449 0.7079 H s s s = + + 按照不同采样频率 Fs1=1Hz, Fs2=10Hz 使用脉冲响应不变法将 H(s)转换为 H(z)数字 IIR 滤波器。观察不同采样频率设计得到的数字 IIR 的差异。 4、给定数字 IIR 指标，用脉冲响应不变法设计 IIR。 数字低通滤波器的指标为: 0.2 , 1 , 0.3 , 15 p p s s ω π α ω π α = = = = dB dB ,使用巴特沃 兹滤波器设计数字 IIR。比较采样频率 Fs=1， 2 时设计过程中的模拟滤波器，数字滤波 器的变化。 5、用双线性变换法设计 IIR，并同脉冲响应不变法比较设计的结果。数字滤波器指标要 求如下 0.2 , 1 , 0.3 , 15 p p s s ω π α ω π α = = = = dB dB(1.Grasp the impulse response method and bilinear transformation design IIR filter principle and specific design methods, familiar with double A computer program for designing lowpass, bandpass and highpass IIR digital filters by linear design; 2 . familiar with the design of analog Butterworth filter, master impulse response method and bilinear transformation method to design digital IIR Filter method)

说明：  利用互相关信息法求混沌序列的相空间重构时延，绝对可用，并附上lorenz序列，以供验证。(Inter-related Information Act, seeking a chaotic sequence of phase space reconstruction delay is absolutely available, along with lorenz sequence for verification.)

基于龙格库塔法的Matlab数值积分函数(Runge-Kutta numerical method based on Matlab integral function)

本程序主要描述的是二维DOA的MUSIC算法，有对应的图(a algorithm about MUSIC 2D direction of arrival. It is a very good and it will give some help to you.)

Distribution systems power flow analysis package using Matlab graphical user interface

说明：  模糊聚类程序，完成！matlab7.0调试通过，内含测试程序及数据！欢迎交流！(Fuzzy clustering procedure, done! matlab7.0 through debugging, testing procedures and data contained! Welcome to exchange!)