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.
['Thomas Lotter', 'Bastian Sauert', 'Peter Vary']
A STEREO INPUT-OUTPUT SUPERDIRECTIVE BEAMFORMER FOR DUAL CHANNEL NOISE REDUCTION