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Approximation entropy: Approximation entropy which is used in time series to measure the irregularity

matlab环境下点云双边滤波，可以对三维点云数据进行双边滤波(Matlab environment point cloud bilateral filtering, the three-dimensional point cloud data can be bilateral filtering)

此代码只要是自然梯度算法（naturalness_gradident_arithmetic，使用matlab编写的，一起学习(This code as long as it is the natural gradient algorithm (naturalness_gradident_arithmetic, using matlab prepared to learn)

通过头传输函数的合成3D音效，matlab程序，还是相关的数据(Transfer function through the synthesis of the first 3D sound, matlab program, or related data)

this is filter bank based fingerprint matching system developed in matlab

说明：  全程:近地倾斜轨道至地球静止轨道转移方案MATLAB程序包，顾名思义。(As the name implies, the MATLAB program package for the transfer scheme from near-Earth tilt orbit to geostationary orbit.)

this code is to perform frequency shift keying modulation technique

Theoretical gravity anomaly of fault model and generation of Gaussian random noise

matlab code for HTK MFCC MATLAB

显示关键点，返回值为关键点的坐标，尺度，方向，模值，描述符(return the (x,y),scale,derection,size)