Multichannel Acoustic Echo Cancellation and Noise Reduction in Reverberant Environments using the Transfer-Function GSC

In this paper, we present a multi-channel acoustic echo canceller that is integrated into the transfer-function generalized sidelobe canceller (TF-GSC). The proposed scheme consists of a primary TF-GSC, for dealing with the noise interferences, and a secondary modified TF-GSC, for dealing with the echo cancellation. The secondary TF-GSC includes an echo canceller embedded within a replica of the primary TF-GSC components. Experimental results demonstrate improved performance compared to cascade schemes of acoustic echo cancellation and adaptive beamforming.