Journal of Xidian University

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Study of speech enhancement in the background of ship-radiated noise

LI Dawei;YANG Rijie;HAN Jianhui   

  1. (Dept. of Electronic and Information Engineering, Naval Aeronautical and Astronautical Univ., Yantai  264001, China)
  • Received:2015-07-05 Online:2016-10-20 Published:2016-12-02
  • Contact: LI Dawei E-mail:latt68@sina.com

Abstract:

Spectral subtraction is wildly used in speech enhancement. But it is not always available in the ship working environment because of the fact that it is hard to discriminate the speech duration with the ship noise. So, in this paper, we propose a new approach, which first computes the frequency spectrum similarity and then discriminates the signal segments into speech or noise roughly. And then by the frame shifting method, we achieve a high discrimination precision. Finally, the improved algorithm is benchmarked on a large measured data and experimental results show that the proposed method can be used in various ship-radiated noise environments. The discrimination accuracy is 98% for ship-radiated noise and 96% for speech.

Key words: speech enhancement, spectral subtraction, spectrum similarity, speech detection, frame shifting