APjulei

说明：  用面包师算法进行图像的置乱，首先是将图像分为4个部分，对每一个部分采用不同的变换方法(With baker image scrambling algorithm, first the image is divided into four parts, each part of the transformation method using different)

说明：  使用5阶巴特沃斯半带滤波器4通道完美重构滤波器组来处理音频数据的例子(Using the 5-order Butterworth filter with a 4-channel semi-perfect reconstruction filter banks to process audio data examples)

Spectrogram implementation in matlab environment

PLL锁相环的角度生成问题，角度的代入运算前的修正问题，总算是解决了！(PLL PLL angle generation problem, the angle of substitution before the operation to fix the problem, finally solved!)

低通滤波器 提供1种滤波器，oneself设计的need the guidance thanks!(low-pass filter with a filter types. oneself design need the guidance thanks!)

模拟了FBG的反射谱和透射谱图像，对FBG的初学者很有用！程序有详细的说明。(The refilection spectra of FBG.)

计算声压级及滤波器设计的，具有很重要的作用( One-third-octave band frequency analyser)

蚁群聚类算法程序。可以用来做基本的蝶形数据测试。效果很好。(Ant Colony Clustering Algorithm procedures. Can be used to make basic test butterfly data. Good effect.)

matlab library to laplician pyramids

you can use this matlab code to change image into different color system such as luv, rgb, yuv and lab