@inproceedings{ author = {M. Kallinger and J. Bitzer and K.-D. Kammeyer}, year = {2000}, month = {Jun}, title = {Study on Combining Multi-Channel Echo Cancellers with Beamformers}, address={Istanbul, Turkey}, abstract={In this paper, we will compare different combinations ofa multi-channel non-adaptive noise reduction unit (NRU)and an acoustic echo cancellation unit (AEC) for a standardsingle-channel voice transmission. The results show thatthe NRU and the AEC-unit can be interchanged without increasingthe computational complexity of the combined system.The length of an AEC’s adaptive filter can be greatlyreduced, if a multi-channel AEC-unit in front of a multichannelNRU is used. Furthermore, the control information,like the step-size of the NLMS-algorithm, has to becomputed only once.}, booktitle={International Conference on Acoustics Speech and Signal Processing (ICASSP 2000)} }