fanfao

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程序设计教程，ppt格式，同时包含有大量程序设计案例源代码(MATLAB programming tutorials, ppt format, also contains a large number of cases the source code programming)

遗传算法 关于粒子群的算法，matlab程序源代码(Genetic algorithm particle swarm algorithm, matlab source code)

用Matlab实现的音频FIR滤波，提供音频文件实例，效果很好(Implemented using Matlab audio FIR filter, to provide examples of audio files with good results)

这是对音频信号进行bch编码后进行嵌入水印的程序(This is the audio signal BCH coding embedded watermark after the procedure)

matlab传递矩阵计算转子临界转速。非常实用(matlab transfer matrix calculation of the rotor critical speed. Very useful)

基于滑动时间窗的支持向量机软测量建模研究，是一片不错的论文，对做软测量的研究生学子们可以参考(Sliding time window based on support vector machine soft sensor modeling is a good paper, to do a soft measuring graduate students who can refer)

linespectrum提取声音信号的线谱(in order to extract line spectrum)

matlab中VCA算法的事例 用于高光谱像元解混(the algorithm of VCA)

matlab上实现的模糊聚类算法，相当有用，是一个聚类工具箱。(matlab on the fuzzy clustering algorithm to achieve very useful, is a cluster toolkit.)