一种基于非负矩阵分解的语音增强算法_隋璐瑛.pdf

33 1 Vol.33 No. 1 2012 3 Mar. 2012 Journal of M ilitary Co unications Technology X 1 2 3 4 隋璐瑛, 张雄伟, 黄建军, 董军涛 ( 1. 1, 210007; 2. ; 3. 2 ; 4.73689 , 210042) : , ,, , , , , : ; ; ; : TN912.3 : A : CN32-1289(2012)01-0018-05 Speech Enhancement Based on Nonnegat iv e Mat rix Fact orization 1 2 3 4 SUI Lu-ying , ZHANG Xiong-wei , H UANG Jian-j un , DONG Jun-tao ( 1.Postgraduate Tea 1 ICA, PLAUST , Nanjing 210007, China; 2.Depart ent of Infor ation Operation Studies ICA, PLAUST ; 3. Postgraduate T ea 2 ICA, PLAUST; 4.Unit 73689 of PLA, Nanjing 210042, China) Abstract: A speech enhance ent approach based on nonnegative atrix factorization algo- rith was proposed to enhance the speech conta inated by additive noise The technique for. speech denoising consists of a training stage and a denoising stage During the training stage the. , prior infor ation about the spectru of noise was odeled by nonnegative atrix factorization al- gorith and the noise-dictionary constructed. In the denoising stage, the spectru of noisy speech was analyzed by nonnegative atrix factorization algorith , then, the noise-dictionary - was co bined with iterative for ulation to evaluate the speech dictionary and the coding atrix of speech, and to reconstruct the enhanced speech. Experi ental results show that the proposed speech e