An Improved Transfer Logic of the Two-Path Algorithm for Acoustic Echo Cancellation

Adaptive echo cancellers with two-path algorithm are applied to avoid the false adaptation during the double-talk situation. In the two-path algorithm, several transfer logic solutions have been proposed to control the filter update. This paper presents an improved transfer logic solution. It improves the convergence speed of the two-path algorithm, and allows the reduction of the memory elements and computational complexity. Results of simulations show the improved performance of the proposed solution. Keywords—Acoustic echo cancellation, Echo return loss enhancement (ERLE), Two-path algorithm, Transfer logic