entropy

该压缩文件分为两个函数，分别用于实现猫脸变换（Arnold变换）及其恢复。(Arnoldencrypt.m Arnolddencrypt.m)

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

直升机显模型跟踪控制系统仿真实例（MFCS）控制仿真，具有实用性的控制方法！(helicopter MFCS control system simulation。)

用matlab做线性曲线回归分析 曲线拟合 matlab 多元线性回归分析 (Using matlab to do a linear regression curve fitting curve matlab multivariate linear regression analysis)

Sound separation by ICA

Analog to Digital converting using matlab

该电子书详细介绍了matlab7.1的基础知识，适合初学者！(The book details the basic knowledge matlab7.1, suitable for beginners!)

主要利用稳健方法比如迭代算法来对跳频信号在Alpha稳定分布噪声环境下进行参数估计(Main advantage of robust methods such as iterative algorithm for frequency-hopping signals Alpha stable distribution parameter estimation in noisy environments)

对语音信号进行分帧处理，输入需要被分帧的语音信号和所需帧长和帧移，即可对语音信号进行分帧处理(The program is used for framing of speech)

matlab ab滤波程序 简单 明了 matlab LMS滤波程序 简单 明了(matlab ab simple matlab LMS filtering process simple filtering process)