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Laplace
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. )
- 2014-01-18 10:44:40下载
- 积分：1
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NUFFT_code
说明： 一种标准的插值或“网格化”方案，基于高斯原理，无需预先计算就可以提高运算速度以及插值权重。(Nonuniform FFTs of the types discussed here are based, in essence, on combining
some interpolation scheme with the standard FFT.)
- 2020-06-19 23:00:02下载
- 积分：1
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growcut
对图形图像进行切割的算法，此算法还可以用与聚类(Graphic images of cutting algorithms, this algorithm can be used with clustering)
- 2009-01-14 10:26:17下载
- 积分：1
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heartsignalfilter
本段Matlab是运动员心跳信号检测项目一个心跳信号出噪仿真程序，文件给出了心跳信号的样本，是一完整的数字信号处理应用程序。(This paragraph is an athlete heartbeat detection Matlab project a heartbeat out noise simulation program, document gives a sample of the heartbeat is a complete digital signal processing applications.)
- 2013-09-12 08:00:08下载
- 积分：1
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Matlab-and-C-CPP-mixed-programming
Matlab 和C C++ 混合编程
刘维编著(Matlab and C C++ mixture programming)
- 2013-09-09 20:53:41下载
- 积分：1
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Simulink_Files_DPD
Nonlinear Distortion in Wireless Systems: Modeling and Simulation with Matlab一书中的源代码simulink文件.(This book covers the principles of modeling and simulation of nonlinear distortion in wireless communication systems with MATLAB® simulations and techniques
In this book, the author describes the principles of modeling and simulation of nonlinear distortion in single and multichannel wireless communication systems using both deterministic and stochastic signals. Models and simulation methods of nonlinear amplifiers explain in detail how to analyze and evaluate the performance of data communication links under nonlinear amplification. The book addresses the analysis of nonlinear systems with stochastic inputs and establishes the performance metrics of communication systems with regard to nonlinearity. In addition, the author also discusses the problem of how to embed models of distortion in system-level simulators such as MATLAB® and MATLAB Simulink® and provides practical techniques that professionals can use on their own projects. Finally, the book explores simulation )
- 2013-01-20 13:26:44下载
- 积分：1
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combin
tow combination or binomial coefficient, factorial and sort function
- 2013-08-03 18:43:35下载
- 积分：1
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4
说明： Matlab2014a最新教程及中英文转换说明，详细讲述了2014a的最新功能。(Matlab2014a latest tutorials and instructions in English and converted, a detailed account of the latest features 2014a.)
- 2015-01-24 11:54:39下载
- 积分：1
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A201003-1461
压缩感知基本理论：回顾与展望A201003-1461(Advances and Perspectives on Compressed Sensing Theory
)
- 2014-02-04 17:46:10下载
- 积分：1
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image_sort
IMAGE_SORT Sorts the given data points (pixels of an image)in the data_ordered array
- 2009-11-25 00:04:19下载
- 积分：1
