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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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xiaoboyuzhi
小波阈值去噪，给出了几个小波阈值去噪的常用方法，供大家参考(Wavelet threshold denoising is given several commonly used wavelet threshold denoising method for reference)
- 2010-10-18 17:16:29下载
- 积分：1
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RGB
一个修改后的acp进行人脸识别的Matlab代码(A modified acp the Matlab code for face recognition)
- 2008-06-13 09:48:24下载
- 积分：1
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constitusion
计算本构方程和热加工图，节省唯象本构方程的复杂计算过程，只需将应力应变数组放于excel中，即可自动计算，并显示本构方程以及热加工图。简单方便(Calculating constitutive equation and hot working diagram, saves the phenomenological constitutive equation of complex calculation process, just put in the excel, the stress and strain array can be automatically calculated, and displays the constitutive equation and hot working diagram.Easy and convenient)
- 2014-08-20 20:30:17下载
- 积分：1
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1
说明： (谱分析方法的综合应用)利用时频分析工具对随机信号进行分离(Frequency analysis of random signals using the tool to separate)
- 2014-09-22 16:36:50下载
- 积分：1
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my_NLMS_good
自己编写的基于nlms的回波消除算法，直接能运行(I have written based nlms echo cancellation algorithm can be run directly)
- 2013-12-04 16:08:55下载
- 积分：1
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dijkstra
使用Matlab编写的一个dijkstra算法，非常的实际好用(Written using Matlab a dijkstra algorithm, a very practical easy to use)
- 2010-07-25 19:51:38下载
- 积分：1
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low_passfilter
用矩形窗设计线性相位FIR低通滤波器,给了源代码，已经调试过了。其中要用到一个函数myfreqz要自己编，在这也附上其代码。希望对大家有用。(Rectangular window with the design of linear phase FIR low-pass filter, to the source code, have been debug. To use a function which myfreqz to own, in that its code is also attached. Hope useful for everyone.)
- 2008-03-09 13:53:13下载
- 积分：1
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Allan--variance
该程序能够通过使用Allan方差算法来分析陀螺噪声。(The program can be through the use of Allan variance algorithm to analyze the gyro noise.)
- 2020-11-30 20:29:28下载
- 积分：1
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modeling-of-C_60-in-matlab
matlab C60 架构的建模。留着以后用。(Matlab modeling of the C60 architecture.)
- 2012-07-24 00:36:05下载
- 积分：1
