A Speech Enhancement Method in Low SNR Environment

摘要：

　　A new method of speech enhancement is proposed based on morphological filter and wavelet transform.The system begins by first conducting morphological filtering,then distinguishing the unvoiced,voiced and noise using TEO in the wavelet domain.It then executes wavelet transform using different threshold on multiscale,and at the same time to improve the threshold function.Experimental results showed that the method not only suppressed noise effectively but also reduced the loss of the unvoiced.It also not only enhanced SNR,but also improved voice clarity and comfort.The merits it espouses makes it an effective speech enhancement algorithm.

关键词： Speech Enhancement Morphological Filtering Wavelet Transform TEO

作者: WANG Yao-qi WANG Xiao-peng Raji Rafiu King

作者单位: School of Electronic and Information Engineering, Lanzhou Jiaotong University.Lanzhou 7300 China

会议类型: 国际会议

会议名称: 2013 International Conference on Intelligent System,Applied Materials and Control Technology(GSAMCT2013)(2013年智能系统、应用材料和控制技术国际会议)

会议地点: 太原

会议语种:英文

页码: 179-183

在线出版日期: 2013-01-13（万方平台首次上网日期，不代表论文的发表时间）