登录
首页 » matlab » Laplace

Laplace

于 2014-01-18 发布 文件大小:1030KB
0 248
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

  • demo_rbpf_gauss
    This is demo for rbpf_gauss.
    2010-07-17 05:37:12下载
    积分:1
  • MythManMonth
    人月神话,又是一本软件工程领域的经典书籍,必读。。。。(MythManMonth.rarMythManMonth.rar)
    2009-12-18 11:22:29下载
    积分:1
  • GraphTheoryAlgorithmMATLAB
    说明:  图论算法及其MATLAB 程序代码 1.求赋权图G = (V, E , F )中任意两点间的最短路的Warshall-Floyd 算法、Kruskal 避圈法 2.求二部图G 的最大匹配的算法(匈牙利算法)、利用可行点标记求最佳匹配的算法 3.从一个可行流f 开始, 求最大流的Ford--Fulkerson 标号算法 6.(Graph Theory Algorithm and MATLAB program code 1. Seeking weighted graph G = (V, E, F) in the shortest path between any two points of the Warshall-Floyd algorithm, Kruskal avoid the circle method 2. Seeking the maximum bipartite graph G matching algorithm (the Hungarian algorithm), using feasible point mark seeking the best match algorithm 3. a feasible flow f from the beginning, find the maximum flow of the Ford- Fulkerson Labeling Algorithm 6.)
    2010-03-28 15:39:29下载
    积分:1
  • tftb-0[1].1
    这是一个用matlab语言编写的小波变换的程序,是时频分析的一种,可以在时域和频域内对信号进行分析。(using Matlab language of the wavelet transform procedure is time-frequency analysis of a kind in the time domain and frequency domain analysis of the signal.)
    2006-09-29 14:28:05下载
    积分:1
  • MATLAB
    程序1:周期信号(方波)的展开 程序2:用图形表示DSB调制波形及其包络线 程序3:通过傅里叶变换找出被随机信号淹没的信号频率 程序4:DSB-AM 双边带幅度调制和解调 程序5:AM调制和解调(Procedure 1: periodic signal (square wave) Program 2: graph DSB modulation waveform and its envelope Application 3: through the Fourier transform to find out the submerged by random signal signal frequency Program 4: DSB- AM double sideband amplitude modulation and demodulation Program 5: AM modulation and demodulation)
    2015-02-09 18:08:46下载
    积分:1
  • pnn
    概率神经网络的源代码示例,输出向量t是一维向量。(Probabilistic neural network source code examples, t is the one-dimensional vector.)
    2013-05-18 01:54:18下载
    积分:1
  • Raised-Cosine-error-rate-baseband-
    matlab实现升余弦滚降最佳基带系统的误码率(Raised Cosine error rate of the best baseband system)
    2015-08-28 16:50:16下载
    积分:1
  • CHAP4_1
    说明:  神经网络实现PID功能的源程序 用MATLAB直接运行就可以 可作学习用!(PID neural network function in MATLAB source code used to run directly on the study can be used!)
    2009-07-31 19:50:49下载
    积分:1
  • l
    说明:  。基于此本文提出一种利用Microsoft Access数据库实现VB与Matlab数据交换的方法,在程序设计中可充分利用两种软件的优势,可以大大缩短软件开发周期,为 含复杂数学计算的可视化软件设计提供了一种可选的方案。(A new method is proposed in this paper to realize data communication between VB and Matlab based on Microsoft Access. It provides a good solution to develop the Visual numerical computing software)
    2012-05-07 21:53:13下载
    积分:1
  • FlyTextApplet
    用小程序模拟实现文字飞行的效果,通过改变字体的大小和显示位置(Simulation with a small procedure to achieve the effect of flying text, by changing the font size and display position)
    2007-11-25 16:44:36下载
    积分:1
  • 696516资源总数
  • 106914会员总数
  • 0今日下载