Computer-aided-design--

说明：  MATLAB小波分析与应用实例(第二版).应用于信号处理和图像处理的原理和基本方法，大量的示例可尽快地了解小波分析，而且在每种分析方法的介绍中同时介绍其问题背景，直接通过Matlab使用小波分析解决实际问题。 (MATLAB Wavelet Analysis and Applications (second edition). Applied to signal processing and image processing theory and the basic method, a large number of sample as soon as possible understanding of wavelet analysis, and analytical methods in each presentation also introduced the background of its problems, directly through Matlab using wavelet analysis to solve practical problems.)

压缩包中自带资源卫星的tle，用matlab读取并绘制半长轴、轨道倾角、偏心率的变化曲线，观察期变化规律，文件读取的技巧很好！！(Compressed package comes resource satellites tle, using matlab to read and draw the semi-major axis , orbital inclination , eccentricity curve , variation of the observation period , file reading skills well ! ! )

对matlab初学者很有帮助，尤其是simulink的爱好者。(Matlab helpful for beginners, especially the simulink lovers.)

一种基于锁相环控制的三相并网逆变器控制系统仿真。(A three-phase grid inverter control based on hysteresis control system simulation.)

本程序包采用matlab编写的几种数值计算中经典的解方程组的算法，包括LU分解、Gauss消元法、Jacobi迭代法、以及Guass-Seidel迭代法的源代码。供大家参考。(This package prepared using matlab several numerical solution of equations of classical algorithms, including LU decomposition, Gauss elimination method, Jacobi iteration, and Guass-Seidel iteration method source code. For your reference.)

matlab.蚁群算法，最优路径，在其他网上找到的，感觉可以用(Matlab. ant colony algorithm, optimal path, found in other online, the feeling can be used)

黄锷论文中EMD和HHT的源程序，已经打包压缩,解压后可以使用(Wong Ngok paper on EMD and HHT source, has been packaged compression, decompression can be used after)

生物模型数值仿真，预测种群数量大小，模拟平衡态的稳定性(Numerical simulation of the biological model, to predict the size of the population, to simulate the stability of the equilibrium)

DCT变换,基于matlab的变换程序，可调用(DCT, matlab-based transformation program, call)

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 )