A Frequency Domain Stereophonic Acoustic Echo Canceler Exploiting the Coherence Between the Channels

Stereophonic acoustic echo cancellation (AEC) is typically intended for use in high quality teleconferencing systems and in multiparticipant desktop conferencing, implementing sound transmission through two channels. Because of the high correlation between the two channel signals, rapidly converging adaptive filters algorithms (such as the two-channel fast recursive least-squares - FRLS) are required. In this paper, we propose a new and efficient frequency domain adaptive algorithm that achieves this goal.