voice-amplification

Audio Watermarking 1

Voice Activity Detection (ref: Sabiner&Rhambur)

数字信号处理重要函数如分裂基fft/卷积/频率响应/滤波器的matlab实现（来自清华大学胡广书教授）(Important DSP functions such as fff/conv/frequency/filters, by matlab)

计算单机无穷大系统，发电机机端短路的短路电流(Calculating-machine infinite-bus system, the generator-side short-circuit short-circuit current)

it s a viterbi coding model , including awgn and so on..

本程序是矩形波的产生。第零步定义了要产生的波形的所有特征参数，矩形波的持续时间WIDTH，矩形波的采样点数POINTS,载波频率为F0，这个频率的最终引入是便于使用RF频率发射波形。第一步包括产生矩形波，并将其调制到RF上，注意，产生的信号的持续时间是矩形波宽度的5倍，这样，总的采样点数就是5*POINTS。同时还应注意，如果要产生一个基带信号，必须设置T0=0.第二步是画出所产生矩形波的源代码。( This procedure is rectangle wave production. Step to produce stage defined the waveform of all characteristic parameters, the duration of the rectangle wave WIDTH, rectangle wave sampling POINTS POINTS, carrier frequency F0, this frequency for the ultimate introduction is easy to use RF frequency emission waveforms. The first step including generating rectangle wave, and modulated to RF, attention, produce the duration of the signal is five times the width of rectangle wave, so, overall sampling POINTS is 5* POINTS. Also, note that if you want to produce a baseband signals must set T0 = 0. The second step is to draw a rectangular wave generated by the source code. )

扩频通信基础框架，基于matlab扩频通信基础框架，基于matlab(Spread spectrum communications infrastructure framework based on matlabSpread spectrum communications infrastructure framework based on matlab)

说明：  利用Matlab编写求取4级移位寄存器的M序列 设初始序列为:1 1 1 1 通过一个四级的移位寄存器,其中在第三级有负反馈(一个模二加法),即将序列的第三位和第四位相加(如序列1 1 1 1经移位寄存器第一次移位后为0 1 1 1)的值再赋到第一位. 序列的周期为16.(The use of Matlab to prepare to strike four of the M shift register sequence based initial sequence as follows: 1 1 1 1 4 through a shift register, which in the third grade there is negative feedback (one-mode two adder), the upcoming series third and fourth combined (such as the sequence 1 1 1 1 by the shift register after the first shift for the 0 1 1 1) the value given to the first again. The cycle sequence was 16.)

Licence Plate Detection

gauss消去法解线性方程组，系数矩阵A存放于数组A中(Gauss elimination method solving linear equations, A of the coefficient matrix A stored in an array)