计算机工程与应用2011，Vol.47Issue(27)：152-154,157,4.DOI:10.3778/j.issn.1002-8331.2011.27.041
运用MMSE先验信噪比估计进行语音增强
Speech enhancement using MMSE priori SNR estimation
摘要
Abstract
To solve the problems that Decision-Directed(DD) a priori SNR estimation gets defects of delayed and non-casual a priori SNR estimation has shortcoming of non-real time.MMSE a priori SNR estimation is proposed in this paper.Based on the Gauss voice model assumption, it directly estimates SNR of noisy speech using the Minimum Mean Square Error (MMSE) methods.Simulation with the SNR.Itakura-Saito distortion measure,signal wave and spectrogram show that the proposed method is not only better than DD in the area of suppressing "musical noise" and preventing the voice distortion but also superior to non-causal a priori SNR estimation on real-time.关键词
语音增强/先验信噪比/音乐噪声/Itakura-Saito失真测度Key words
speech enhancement/ priori Signal to Noise Ratio (SNR)/ musical noise/ Itakura-Saito distortion measure分类
信息技术与安全科学引用本文复制引用
熊民权,曾以成,侯丽霞,杨红姣..运用MMSE先验信噪比估计进行语音增强[J].计算机工程与应用,2011,47(27):152-154,157,4.基金项目
湖南省自然科学基金(the Natural Science Foundation of Hunan Province of China under Grant No.08JJ5031) （the Natural Science Foundation of Hunan Province of China under Grant No.08JJ5031）
湖南省教育厅一般项目(No.08C865). （No.08C865）
