Chapter4

this is a file about penalty functions in genetic algorithm

实现通信系统里面的最基本的几个功能函数，如卷积，DTF，IDFT，已及模拟调制。(Communication systems to achieve a few basic functions inside a function, such as convolution, DTF, IDFT, has been and analog modulation.)

graph compares pd versus signal noise ratio

本源程序提供在AWGN信道下的bpsk调制方式的仿真，并与理论曲线作比较，得到了理想的结果(This source provides bpsk under the AWGN channel modulation of the simulation, and compared with the theoretical curve obtained satisfactory results)

code for dct for image processing

可用于计算齿轮（包括变位齿轮）在不同传递转矩下的时变啮合刚度(It can be used to calculate the time-varying meshing stiffness of gears (including modified gears) at different transmission torque)

glcm on dwt to get features

阵列信号对波达方向估计（DOA）的经典算法——MUSIC算法(Array signal to the wave of direction estimation (DOA) algorithm, the classical MUSIC algorithm)

语音信号经过一个FIR滤波器，包括前后的频谱图，光谱图，滤波器的零值点，以及频谱(Voice signal through a FIR filter, including the front and rear of the frequency spectrum, spectral map, the filter zero points, and the spectrum)

Matlab toolbox where many filter are realised