lotter05@interspeech_2005@ISCA

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#1 A stereo input-output superdirective beamformer for dual channel noise reduction [PDF] [Copy] [Kimi]

Authors: Thomas Lotter ; Bastian Sauert ; Peter Vary

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.