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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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8
说明： 一种自适应滑模控制器的MATLAB设计程序(An adaptive sliding mode controller design of the MATLAB program)
- 2009-06-16 09:58:04下载
- 积分：1
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chirp1D
雷达信号压缩，一维信号的生成以及如何让拖尾压缩。(The radar signal compression, the generation of one-dimensional signals as well as how tailing compression.)
- 2013-04-18 17:43:19下载
- 积分：1
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linebuck
基于Buck调压的高频高压
除尘电源的研究
(Research on high-frequency high-voltage inverter power supply for electrostatic precipitator
based on Chopper
)
- 2012-11-02 16:04:14下载
- 积分：1
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Obstacle-avoidance
四个机器人，实现编队行走，遇到障碍物后变换队形，实现避障，基本思想是利用栅格法。(Four robot, achieve the formation of walking, encounter an obstacle after the formation and transformation, to achieve obstacle avoidance, the basic idea is using grid method.)
- 2021-04-29 22:48:42下载
- 积分：1
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Matlab
本书全面介绍了最新MATLAS 5.3版的全部令命描述、语法和应用。包括:数值计算、数据分析、绘图和图形图像处理、用户图形界面创建等几大类。各个命令都附有实例，易学易用。
(matlab)
- 2010-06-14 18:38:46下载
- 积分：1
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20040904064936
叫你怎么样使用matlab，这是一个实验指导书，详细步骤附有图片。(Tell you how to use matlab, this is an experimental guide books, detailed steps with pictures.)
- 2011-05-17 09:03:25下载
- 积分：1
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matlab-study
matlab自学通，自己学习matlab的好资料。帮助您一步一步深入matlab的知识世界里(matlab ，it can revolosion the problem about chath the rightes answer .)
- 2010-05-22 10:40:08下载
- 积分：1
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PPL
关于锁相环路的相关仿真，描绘的是一阶锁相环，二阶及三阶的各个特性。(PLL simulation, depicted is a first-order phase-locked loop, the second-order and third-order characteristics.)
- 2013-03-04 21:24:28下载
- 积分：1
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M01
关于Matlab的课件，里面含有数学建模的基础知识，对于数学建模的了解是很有帮助的(Courseware on Matlab, which contains the basics of mathematical modeling, mathematical modeling for understanding is helpful)
- 2011-10-25 14:32:04下载
- 积分：1
