期刊名称：Iranica Journal of Energy and Environment (IJEE)
印刷版ISSN：2079-2115
电子版ISSN：2079-2123
出版年度：2011
期号：3135
页码：166-180
出版社：Noshirvani University of TEchnology
摘要：In this paper, a novel approach for speech signal enhancement is presented. This approach employs singular value decomposition (SVD) to overlook noise subspace and uses Genetic Algorithm (GA) to optimally set the essential parameters. The method is elicited by analyzing the effects of environmental noises on the singular vectors as well as the singular values of clean speech signals. This article reviews the existing approaches for subspace estimation and proposes novel techniques for effectively enhancing the singular values and vectors of a noisy speech. This results in a considerable attenuation of the noise and retaining quality of the original speech. The efficiency of our proposed method is affected by a number of parameters which are optimally set by utilizing the GA. Extensive sets of experiments have been carried out on speech signals impaired by additive white Gaussian noise and/or different types of realistic coloured noises. The results of applying the six superior speech enhancement methods are compared using the objective (SNR) and subjective (PESQ) measures.
