suanfa

转载leiqui的内容，QPSK仿真内容，附件模型是根据书上的原理图进行组织，每一模块都呈现。例如I/Q分路，调制，解调，判决等。 (Reproduced leiqui content, QPSK simulation content, attachment model is based on the book is organized on the diagram, each module are presented. Such as I/Q splitter, modulation, demodulation, judgments.)

语音信号的数字滤波——利用窗函数法实现FIR数字滤波器的设计(Speech Signal Digital Filtering- using a window function method implementation FIR digital filter design)

利用小波算法进行图像和视频处理，将原始小波块放在新小波块的左上角，在小波块右下角补零。(Using wavelet algorithm for image and video processing, the original wavelet wavelet block block on the new upper left corner of the block in the lower right corner of the wavelet zeros.)

visual cryptography & hash funcction for data and image files

一维等离子体FDTD的Matlab源代码，计算电磁学方向(One-dimensional plasma FDTD Matlab source code, computational electromagnetics direction)

FIR filter design with unseperable window, seperable window, frequency sampling method

说明：  蚁群算法的matlab版，希望对初学者有所帮助(ant colony matlab)

一个matlab写的人脸识别源代码，比较好用，代码也比较规范(Write a matlab source code for face recognition, more easy to use, fairly standard code)

对振动信号进行时域分析，得到模态参数的方法。(The vibration signal in time domain analysis, modal parameters.)

用MATLAB画一个弯曲的圆柱 思想：把圆柱按轴线分若干段，在每个断面画圆，圆的法线就轴线的切向方向。柱面画若干平行于轴线的线条，其中用到平行单位矢量点积等于1，不平行的结果是[-1，1）。 (MATLAB painting with a cylindrical curved thinking: the cylinder axis by a number of sub-paragraph in each section drawcircle, round on the normal axis of the tangential direction. Painted a number of cylindrical axis parallel to the lines, which use a parallel unit vector point plot equal to 1, the result is not parallel to [-1,1).)