登录
首页 » matlab » Laplace

Laplace

于 2014-01-18 发布 文件大小:1030KB
0 249
下载积分: 1 下载次数: 18

代码说明:

  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. )

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • PSO
    基本粒子群算法,可解决优化问题,简单,效果好,实用(Basic particle swarm algorithm, solve the optimization problem, simple, good effect, practical)
    2013-04-06 11:34:34下载
    积分:1
  • hierarchical
    it will separate the image based on its color
    2009-12-01 19:51:02下载
    积分:1
  • myVAD
    This is another source code for speech recognition.. this is the voice active detection using energy detection
    2010-02-05 00:40:27下载
    积分:1
  • EigValueVector
    说明:  求解方阵所有的特征值以及特征值对应的特征向量(all eigenvalue and the corresponding eigenvectors for square matrix)
    2010-04-05 13:23:11下载
    积分:1
  • Lyapunov
    关于吕金虎CC算法和最大Lyapunov指数计算的一些问题的说明(About Lvjin Hu CC calculation algorithm and some of the largest Lyapunov exponent description of the problem)
    2011-10-19 11:38:39下载
    积分:1
  • MatLab7Prorammig
    关于MATLAB基础操作的一本书,纯英文版的,也可以作为外文翻译的书(About MATLAB basic operation of a book, pure English, but also can be used as a foreign language translation of the book)
    2009-03-24 23:51:55下载
    积分:1
  • vehicle-braking
    Matlab的车辆制动系统建模源代码,实例涵括面广,种类多,适用于初学者(The vehicle brake system modeling Matlab source code examples covers a wide range, variety, suitable for beginners)
    2014-02-25 22:23:25下载
    积分:1
  • HoughTransform4detection
    This demo shows simple method of shape detection using Hough Transform
    2010-02-20 04:29:51下载
    积分:1
  • jingtongMATLABzonghefudao.rar
    这是一本有关MATLAB的参考书,适合于使用MATLAB或正在打算使用MATLAB的读者。本书另辟蹊径可以借助或不借助MATLAB随带的文档资料让读者自学MATLAB。书中口语化的风格,使读者易于阅读。如书名所示,本书提供了读者精通MATLAB所需的工具。作为编程语言和可视化工具,MATLAB具有丰富的一系列功能,可解决工程、科学计算和数学学科中许多问题。本书的基本目的是通过向读者展示如何有效地使用这些功能来帮助读者增强工作能力。由于MATLAB交互式的性质,书中内容以举例方式来描述。在读者阅读本书的同时, 这些例子可以通过运行MATLAB而再现。 本书只涉及一般读者所用到的一些专题,所提供的资料可用于包括UNIX工作站、Macintosh 和PC在内的所有计算机平台。除了标准的MATLAB本身这部分的功能之外,书中只讨论了字符工具箱。其它更为专用的工具箱没有进行讨论。而且,没有讨论与机器有关的MATLAB诸方面,例如MEX文件的编写。 本书开发了许多M文件函数,它扩展了MATLAB的功能。在书中,作者演示了各种MATLAB的功能和编程技术,它们总称为精通MATLAB的工具箱。 (This a reference book on MATLAB. suitable for use MATLAB or intend to use MATLAB readers. The book can take advantage of alternatives to using MATLAB or not accompanied by the documents and information for readers to self- MATLAB. The book colloquial style, so that readers easily readable. As indicated in the title, this book provides readers proficiency in the necessary tools for MATLAB. As a programming language and visualization tools, MATLAB is rich in a variety of functions, address, Scientific Computing and Mathematics subjects of many of the problems. The book's basic aim is to show readers how to effectively use these functions to help users enhance their ability for work. As MATLAB interactive nature of the book as a way of example to describe. In the book readers at the s)
    2006-11-13 16:40:43下载
    积分:1
  • liner-formular
    利用Jacobi迭代法和共轭梯度法来解线性方程组的matlab源代码(Use Jacobi iteration method and conjugate gradient method for solving linear equations matlab source code)
    2014-02-28 16:35:31下载
    积分:1
  • 696516资源总数
  • 106914会员总数
  • 0今日下载