Sixth European Conference on Speech Communication and Technology

Budapest, Hungary
September 5-9, 1999

Speech Enhancement Using a Multi-Microphone Sub-Band Adaptive Griffiths-Jim Noise Canceller

P. W. Shields, Douglas R. Campbell

Department of Electronic Engineering and Physics, University of Paisley, Scotland, UK

The goal for most speech enhancement techniques is to improve speech quality by increasing intelligibility and/or reducing listener fatigue. The Multi-microphone Sub-band Adaptive (MMSBA) processing scheme has been shown to improve both the SNR and speech intelligibility of a wanted speech source in the presence of an unwanted noise source, in a moderately reverberant real-room environment using two microphones [1]. The proposed Sub-band Adaptive Griffiths-Jim (SBAGJ) processing scheme uses features from the Griffiths-Jim [2] adaptive noise canceller, in conjunction with the MMSBA scheme. The combination of the Griffiths-Jim front end, and the MMSBA noise cancelling section results in a system with the improved filter performance of a sub-band processing scheme, but bypasses the need to explicitly deal with the causality issues associated with many adaptive noise cancellation algorithms.

Full Paper (PDF)   Gnu-Zipped Postscript

Bibliographic reference.  Shields, P. W. / Campbell, Douglas R. (1999): "Speech enhancement using a multi-microphone sub-band adaptive griffiths-jim noise canceller", In EUROSPEECH'99, 2559-2562.