saeed

Score: 197
Uploads: 5
Downloads: 3
Create time: 2017-10-09 02:22:23

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Salt Noise Reduction.rar - Salt Noise Reduction
Homomorphic.rar - Homomorphic Frequency Filters
Frequency Filters.rar - Frequency Filters Frequency Filters
EdgeDetection_imdilate.rar - EdgeDetection_imdilate
Edge Detection Filters.rar - Edge Detection Filters

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Dereverberation.rar - 通常语音信号在增强时会出现混响现象,演讲者为了消除背景混响,不得不频繁地偏转头部的方向,这样会造成脉冲响应的不断改变。我们结合盲解卷法和频谱消去法来提高逆滤波器的滤波效果。我们利用输入语音信号间的相关系数矩阵计算出稳定、精确的室内脉冲响应的逆滤波器,而这些输入信号无需测量室内的脉冲响应就能被观测到。逆滤波能够消除早期的反射,这些反射包含混响中的绝大部分能量。之后,用频谱消去法来抑制逆滤波后的信号的尾部混响。本方法在实际适应性方面的表现通过具体的实验进行了验证,结果表明盲解卷法和频谱消去法的结合相较于单独使用一种方法,能够提供一个更优越的演说环境。
dereverberation.zip - Dereverberation code in matlab
Channel-equalization.rar - CHANNEL EQUALIZATION AND BLIND DECONVOLUTION Blind deconvolution is the process of unravelling two unknown signals that have been convolved. An important application of blind deconvolution is in blind equalization for restoration of a signal distorted in transmission through a communication channel. Blind equalization has a wide range of applications, for example in digital telecommunications for removal of intersymbol interference, in speech recognition for removal of the effects of microphones and channels, in deblurring of distorted images, in dereverberation of acoustic recordings, in seismic data analysis, etc.

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