LevelSet_ChunmingLi_v1

This simulation is done on basis to calculate the electricity cost for required time of usage

基于X12的季节调整模型的matlab程序(X12 seasonal adjustment model based on matlab program)

传统的短时谱估计语音增强算法通常假设语音谱分量相互独立，没有考虑语音谱分量间的相关性。针对这 一问题，该文提出一种新的基于多元Laplace分布模型的短时谱估计算法。首先，假设语音的离散余弦变换(DCT) 系数服从多元Laplace分布，以此利用谱分量间的相关性；在此基础上，利用多元随机矢量的高斯尺度混合模型表 示，推导得到语音DCT系数矢量的最小均方误差(MMSE)估计的解析表达式；并进一步推导了基于该分布模型的 语音存在概率，对最小均方误差估计子进行修正。实验结果表明，该算法在抑制背景噪声和减少语音失真等方面优 于传统的语音增强方法。(The spectral components of speech are usually assumed to be independent in traditional short-time spectrum estimation, which is not the case in practice. Tosolve this problem, a new speech enhancement algorithm with multivariate Laplace speech model is proposed in this paper. Firstly, the speech Discrete Cosine Transform (DCT) coefficients are modeled by a multivariate Laplace distribution, so the correlations between speech spectral components can be exploited. And then a Minimum-Mean-Square-Error (MMSE) estimator based on the proposed model is derived using a Gaussian scale mixture representation of random vectors. Furthermore, the speech presence uncertainty with the new model is derived to modify the MMSE estimator. Experimental results show that the developed method has better noise suppression performance and lower speech distortion compared to the traditional speech enhancement method. )

压缩感知是新兴起来的一门重要学科，这里提供香港大学沙威最经典简单的一个框架。由小波先进行稀疏化，再用OMP算法进行修复重构(Compressed sensing is a new up an important subject, here Javert University of Hong Kong' s most classic of a simple framework. First performed by the wavelet thinning, then OMP algorithm repair Reconstruction)

无刷直流电机基于双闭环simulink仿真，比较稳定的两个仿真(Brushless DC motor simulation based on double closed-loop simulink, two more stable simulation.)

计算求解连续时间信号的SINAD，分析其频谱特型(Calculate the SINADof Real Signal)

在数学建模培训中，降落伞问题很是突出，联系此题对同学有很大的提高，从而程序也很重要。所以发此文件。(Parachute Su snow modeling program title race body)

此文件介绍了matlab的基础知识，适合于初学者进行学习，希望对大家有所帮助(This document describes the basics of matlab, suitable for beginners to learn, we want to help)

Kohonen MAP Self Organized

一个遗传算法优化二阶函数的程序，非常适合学习遗传算法的初学者(GA(Generic Algorithm)toOptimize)