Speech Enhancement: Analysis of beamformers in reverberant environments

This book is an excerpt of the collective work done on reducing microphone inaccuracies using various adaptive beamformers and emphasizes on-the Elko’s Beamformer the Weiner Beamformer Max-SNIR Beamformer and the delay-and-sum beamformer. These beamformers are implemented with the fractional delay capability and then tested under reverberant conditions. This work mainly concentrates on the effect of Reverberation on the outcome of a beamformer. A reverberant room environment is simulated and the effect of reverberation on an Elko’s beamformer output is compared with that of a Weiner beamformer.