Convergence analysis of stereophonic echo canceller with pre-processing-relation between pre-processing and convergence
Atsushi Hirano, Kenji Nakayama, K. Watanabe · 1999
This paper presents convergence characteristics of stereophonic echo cancellers with pre-processing. The convergence analysis of the averaged tap-weights show that the convergence characteristics depends on the relation between the impulse response in the far-end room and the changes of the pre-processing filters. Examining the uniqueness of the solution in the frequency domain leads us to the same relation. Computer simulation results show the validity of these analyses.