LDA-iris

说明：  本书是学习数值方法最新版本matlab实现的好帮手，详细而全的讲解及实现为自学matlab是一本不错的书籍。(This book is the latest version of matlab numerical methods to learn to achieve a good helper, detailed and full realization of the self-presentation as well as matlab is a good book.)

联合开发网 - pudn.com

Estimates the power spectral densities (PSDs) using the ML-based empirical Bayes method for deciding the diagonal loading.

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. )

Matlab PCA主成分分析 一个比较好的matlab代码，非常有用(Matlab PCA PCA matlab code is a relatively good, very useful)

直流电动机瞬态运行过程仿真过程和分析 理论 波形 电路(Process simulation and analysis of transient operation of the DC motor theory waveform circuit)

一个故障诊断的程序，采用了多种方法，将故障时刻检测了出来，并进行了比较(A fault diagnosis program, using a variety of methods, fault detection out moments, and compared )

解优化问题时常用的惩罚函数法，分为内点法和外点法两种，求解约束优化问题最优值。(Penalty function method, including interior point method and exterior point method, to solve the optimal value of constrained optimization problems.)

针对正弦信号仿真，然后给它加干扰，最后进行时域滤波的过程(For sinusoidal signal simulation, and then add it to interfere with, the last time domain filtering process)

元胞自动机，很好的模拟软件哦！ 是使用matlab编写的！(Cellular Automata, a good simulation software Oh! Prepared by the use of matlab!)