Beamforming-Based Multichannel Acoustic Echo Cancellation

Beamformers are widely used in speech enhancement, direction-of-arrival (DOA) estimation, source localization, source separation, acoustic echo cancellation (AEC), and other tasks. They utilize a sensor array to amplify signals propagating from specific directions while attenuating signals propagating from other directions. In this seminar, we present beamformer design methods for AEC and region-of-interest (ROI) spatial filtering. First, we consider multichannel AEC in dynamic environments, where the objective is to eliminate the acoustic coupling between a loudspeaker and a microphone array in a dynamic environment where additional speech may be present. Then, we optimize the array geometry in a nonuniform linear array structure for high directivity.

M.Sc. student under the supervision of Professor Israel Cohen and Dr. Baruch Bardugo.