G.723.1

数字锁相环数学模型,对有研究信号调制的数学建模.(Digital phase-locked loop mathematical model of research has the mathematical modeling of signal modulation.)

(1) 产生数值为±1的用户随机数据；给出Matlab下对应的模块； (2) 产生并给出64×64的Walsh矩阵，作为用户接入的扩频码； (3) 利用上述一个用户的扩频码和用户数据演示扩频过程；给出Simulink工作框图； (4) 利用FFT，计算并画出基带数据和扩频信号的频谱（在一个图中给出）； ((1) value of ± 1 generated random data users given under the corresponding Matlab module (2) generation and gives the Walsh 64 × 64 matrix, as the user access to the spreading code (3) the use of the a user' s spreading code and spread spectrum user data presentation process given work Simulink block diagram (4) the use of FFT, calculate and draw the base-band spectrum data and the spread spectrum signal (given in a diagram) )

对给定语料估计其基音周期。 要求用MATLAB或C语言实现有关基音检测算法，并给出检测结果。 (For a given corpus to estimate the pitch period. Required to use MATLAB or C language realization of the pitch detection algorithm, and gives test results.)

用MATLAB做的很不错的动画时钟哦，时间很准(Use MATLAB to do the animation is pretty good clock Oh, time is very prospective)

上传的源代码为《精通matlab GUI设计》的源代码(From the source code as " proficient in matlab GUI design" of the source code)

A program for computing the fast forier transformation (FFT).

永磁同步电机的仿真模型，matlab文件，可实现闭环，计算力矩(model of permanent magnet synchronous motor)

一维波动方程计算的程序，有限差分法,很有用的程序(Program of one-dimensional wave equation, finite difference method fdtd)

电力系统调度程序，运用于matlab,适用于学生科研研究(Power system scheduler)

finding the density matrices