Improved transfer logic of two-path algorithm for acoustic echo cancellation

Abstract

The two-path algorithm in the acoustic echo cancellation is widely applied to avoid the false adaptation problem during the double-talk situation.This paper proposed an improved transfer logic for the two-path algorithm;based on the comparison of the Echo Return Loss Enhancement(ERLE) for the filters,the improved transfer logic decided whether to permit filter update.Furthermore,the improved transfer logic managed to detect the double-talk and avoid the false filter update,improved the convergence speed and allowed the reduction of the memory requirement and computational complexity.The simulation results show the improved performance of the proposed solution.