An Improved Fast LMS/Newton Algorithm for Application to Acoustic Echo Cancellation

In this paper we proposed an improved fast LMS/Newton algorithm for application to acoustic echo cancellation.The new algorithm is different from not only the FNTF algorithm [1] based the FRLS,but also the algorithm 2 [2] based on the LMS completely.For the proposed one we use the fast RLS algorithm in lattice predictive filtering part with some modification and the LMS in adaptive transversal filtering part.Therefore it has the advantage of both the fast convergence for FNTF and the stability for the algorithm 2 [2] .The simulation experiments using Chinese speech exciting for modeling actual acoustic channel justify the previous issue.