PR_EX1

《MATLAB图形技术_绘图及图形用户接口》 MATLAB语言在数值计算，数据处理，自动控制，信号处理，神经网络，优化计算，模糊逻辑，小波分析，图像处理，统计分析等众多领域有着广泛的用途。(" MATLAB graphics _ graphics and graphical user interface" MATLAB language in the numerical calculation, data processing, automatic control, signal processing, neural network, optimization of computing, fuzzy logic, wavelet analysis, image processing, statistical analysis and many other fields have a wide range of applications .)

MATLAB绘制曲线代码，类型有几种，应该可以满足几种要求(MATLAB code for drawing curves, there are several types, should meet several requirements)

16 mpsk vs qask comparison of two techniques in matlab code

This code is useful for multi user mimo systems

simpson algortihm that could be fine in all fields

实现simulink三轴运动平台的运动仿真(Motion simulation of Simulink three-axis motion platform)

This matlab simulation model explains operation of openloop Buckboost converter.

comsol rf 模块的使用说明，包括各种模型及详细例子说明(comsol rf module instructions, including detailed examples of various models and)

1. 给一段原始的语音信号（可以是自己录制的一段语音），加上一频率为3.8kHz的高频余弦噪声和频率为3.6kHz的高频正弦噪声（幅度自己可以选择），用窗函数设计一滤波器（要求最小阻带衰减为50dB）对加噪后的语音信号进行滤波，画出滤波器的频率响应曲线，画出滤波前后的时域图和频谱图。 需要用到的函数： fir1 用窗函数设计FIR滤波器的函数 2. 用GUI设计一界面（如图1所示）完成如下功能： 1） 输入一语音信号，画出语音信号的时域图和频谱图； 2） 对语音信号加噪处理，画出加噪后的时域图和频谱图； 3） 给定滤波器的性能指标，采用几种不同的方法设计滤波器对加噪信后进行滤波，画出各滤波器的频率响应曲线，画出滤波后的时域图和频谱图。 (1. to some of the original speech signal (which can be a voice you record yourself), plus a cosine frequency of 3.8kHz frequency noise and frequency of 3.6kHz frequency sinusoidal noise (in the range that they can choose), with a window function to design a filter (requires a minimum stop band attenuation is 50dB) after adding noise to the speech signal is filtered, the filter frequency response curve to draw, draw diagrams and time-domain spectrum before and after filtering. Need to use the function: function fir1 with window function design FIR filter design 2. Using a GUI interface (Figure 1) complete the following functions: 1) an input speech signal, the speech signal in the time domain to draw graphs and spectrum 2) adding noise to the speech signal processing, draw diagrams and time-domain plus noise spectrum after 3) to set the filter performance, using several different methods designed to filter letter after adding noise filtering, draw the frequency response curve of each )

这个程序主要是用来设计实现一个加解密的系统 采用matlab设计 用了二进制循环 异或的知识(与刚才对应的解密程序)(This program is mainly used to design and implement a system of encryption and decryption using matlab design cycle using the binary XOR of the knowledge (and have the corresponding decryption process))