Joint Design of Acoustic Echo Cancellation and Adaptive Beamforming for Microphone Arrays

Abstract

For a recently proposed concept combining acoustic echo cancellat.ion (.4EC) and adapt.ive beamforming microphone arrays (ABMAs), crucial design and control issues are discussed. For ABMAs, data-independent and data-dependent beamforming algorithms are considered. While the actual signal processing of ABMA and AEC can be largely decoupled, efficient implementations benefit from control mechanisms overviewing the entire system. Key design parameters for t.ypical microphone array applications are discussed.

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