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Speech Enhancement based on Smoothed Global Soft Decision  

Jo, Q-Haing (School of Electronic and Electrical Engineering, Inha University)
Park, Yun-Sik (School of Electronic and Electrical Engineering, Inha University)
Chang, Joon-Hyuk (School of Electronic and Electrical Engineering, Inha University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.44, no.6, 2007 , pp. 118-123 More about this Journal
Abstract
In this paper, we propose an improved global soft decision for speech enhancement in noise environments. From an examination of statistical model-based speech enhancement, it is shown that the global soft decision has a fundamental drawback at the offset region of speech signals. To overcome the drawback, we apply a new speech enhancement method based on a smoothed Global likelihood ratio to the global soft decision. Performances of the proposed method are evaluated by subjective tests under various environments and yield better results compared with the reported speech enhancement method.
Keywords
Speech Enhancement; Global Soft Decision; Smoothed Global Likelihood Ratio;
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