nonlinear-effects

This matlab script is for vector field plot. It might be helpful for 2D and 3D field plot. Try it.

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

说明：  本算法是基于蝙蝠优化算法BA优化SVM，可以大大提高VMD的分类准确率，提高优化时间。(This algorithm is based on bat optimization algorithm BA to optimize SVM, which can greatly improve the classification accuracy of VMD and improve the optimization time.)

视频运动估计快速块匹配方法　十字形菱形六边形搜索(the video motion estimation based on fast block matching Cross Diamond Hexagon Search)

支持向量机和BP神经网络虽然都可以用来做非线性回归，但它们所基于的理论基础不同，回归的机理也不相同。支持向量机基于结构风险最小化理论，普遍认为其泛化能力要比神经网络的强。为了验证这种观点，本文编写了支持向量机非线性回归的通用Matlab程序和基于神经网络工具箱的BP神经网络仿真模块，仿真结果证实，支持向量机做非线性回归不仅泛化能力强于BP网络，而且能避免神经网络的固有缺陷——训练结果不稳定。 (Support Vector Machine and BP neural network, even though there can be used to make non-linear regression, but they are based on the theoretical basis for the different, the mechanism of regression is not the same. Support vector machine based on structural risk minimization theory, generally considered the generalization ability of neural networks than the strong. To test this view, the paper prepared by non-linear regression support vector machine procedures and based on a common Matlab neural network toolbox of BP neural network )

说明：  拟合—内插——插值——保存图片 拟合—内插——插值——保存图片 拟合—内插——插值——保存图片 拟合—内插——插值——保存图片(polyfit-interploy-exp-save picture)

LBM法求解流体力学中的泊肃叶流问题，输入迭代次数，输出动态速度分布图。(LBM method in fluid mechanics Poiseuille flow problem, enter the number of iterations, output dynamic velocity distribution.)

Fiber bragg grating apodization.

In this paper, we consider the use of Modulation Spectra for voice pathology detection and classification. To reduce the high-dimensionality space generated by Modulation spectra

MIS结构是半导体技术中的一个重点研究内容，本程序使用matlab程序编写，用于模拟MIS电容在不同频率和不同的非理想因素影响下的C-V特性(MIS structure is a key semiconductor technology research in the content, this program uses the matlab programming, used to simulate the MIS capacitor at different frequencies and different factors of non-ideal CV characteristics under)