Interspeech'2005 - Eurospeech

Lisbon, Portugal
September 4-8, 2005

A Stereo Input-Output Superdirective Beamformer for Dual Channel Noise Reduction

Thomas Lotter, Bastian Sauert, Peter Vary

RWTH Aachen University, Germany

This contribution presents a stereo input-output beamformer for dual channel noise reduction. The computationally very efficient beamformer adapts superdirective filter design techniques to binaural input signals to optimally enhance signals from a given spatial direction. The beamformer outputs a stereo enhanced signal and thus preserves the spatial impression. Experiments in a real environment using a dummy head and various speech sources indicate that the proposed algorithm is capable of improving the speech intelligibility significantly.

Full Paper

Bibliographic reference.  Lotter, Thomas / Sauert, Bastian / Vary, Peter (2005): "A stereo input-output superdirective beamformer for dual channel noise reduction", In INTERSPEECH-2005, 2285-2288.