Assingment_2

清华大学信号课程第二次实验，内容是基于傅立叶级数的信号分解以及双音频按键音合成(Tsinghua signal course the second experiment, the content is based on the Fourier series of two-tone signal decomposition and synthesis of key tone)

说明：  对指纹进行处理，指纹识别，带有GUI界面，但是需要付费才能得到代码(Fingerprint processing and fingerprint recognition)

用来做灰色预测的源代码，适用于小样本的预测，精度较高(Used for gray prediction of source code, applies to small sample forecast accuracy)

用C++编写的一个用变步长梯形法来求积分的程序(Written in c++ ,a variable step size trapezoid method to integrate the process.)

matlab扩展编程：增加了matlab的数据结构和编程技巧，c调用matlab，matlab访问硬件系统，matlab录音工具，matlab的语音识别系统等(matlab expand programming: an increase of matlab data structures and programming techniques, c call matlab, matlab access to hardware system, matlab recording tools, matlab voice recognition systems, etc.)

这是我们计算机控制的一个上机题,希望大家的学习有所帮助(This is a computer-controlled machine on that, I wish you all a learning help)

识别不同的调制方式，例如AM，psk等。(Identify the different modulation methods, such as AM, psk and so on.)

维也纳大学LTE-A系统级仿真matlab程序。(University of Vienna LTE-A system-level simulation matlab program.)

To find the transposition encryption in a text.

k近邻算法和KALMAN滤波相结合的一个实例论文(k nearest neighbor algorithm and the KALMAN filter paper an example of combining)