Chapter_4

源代码，是malab中的一个基础的源代码，供大家学习。(Source code, is the malab a basis source code for everyone to learn.)

Decorrelated fast cipher source code from state technical university in Russia

This contains the full set of source files for the MatClass library together with a make file to create the libraries using Microsoft C/C++ v7 or later. This make file is a stand-alone file to be used with NMAKE or as a NON-PWB makefile in PWB. Note the make file generates uses the Large Memory model. It generates a library file called LIBMAT.LIB.

this is the function of the the differential of equation that program the modeling

用toplitze 矩阵重构法实现相干信源来波方向估计(using the method of matrix reconsructing to realize the estimation of DOA of coherent singnal)

simulink实现SVPWM调制,建立三相锁相环的设计和单相锁相环设计，保留必要的PI控制器等模块。(simulink realize SVPWM modulation, phase-locked loop is designed to establish a three-phase and single-phase locked loop design to retain the necessary PI controller modules.)

自己写的JS程序： 具体是使用JS+JQ+animate动画+勾股定理实现了画太极图，原理很简单，就是使用绝对定位作为 div坐标+动画+div生成，升级画法：可以使用三角函数(sin,cos,tan etc)，使用勾股定理每个像 素点的位置不太好把握！ 最后：感兴趣的同学可以将imgs中的图片改成透明的图片，替换JS中方块，这样效果好看些。(JS write their own programs: Specifically using JS+ JQ+ animate animation+ Pythagorean realized painting of Tai Chi, the principle is very simple, is to use absolute positioning as + animation+ div div coordinate generation, upgrade painting: You can use trigonometric functions (sin, cos, tan etc), each pixel using the Pythagorean theorem Prime location is not very good grasp of the point! Finally: Interested students can imgs pictures into a transparent image, replace JS in the box, so the effect look better.)

读取BMP文件信息和显示，读取文件头信息，包括大小，长宽，水平和垂直分辨率，彩色数目，实际用到的彩色数目，关键颜色数目，压缩方式，每像素用到的bit数等(to read and display bmp file. output the header information, includnig file size, image width and height, horizontal and verticular resolution, number of color used and number of significant color, compression method, bit count per pixel etc.)

说明：  进行Gray码的图像变化，思想是进行位操作，首先将原始图先的每一位取出来， 然后将十进制转化位二进制，将其按位取出，进行变换，得到变换后图像的每一位的值，再进行组合即可(Gray code for the image change idea is to place operation, first the original plan to take out each and every first and then bit binary decimal conversion, be removed by bit, for transformation, transformed the image of each of value, then the combination can be)

speech Stft pitch detection