Echo control algorithm with howling suppression on metro intercom system and its application
WANG Guo-zheng
LIU Quan-li
Abstract：The intercom system of metro is an important component of Passenger Information System. Due to the noisy environment and device limitations,the acoustic echo of the full duplex intercom system is too strong,and howling phenomenon often occurs in practical applications.The present intercom system of metro is basically running in half-duplex mode. In this paper,a normalized least mean squares algorithm that combined with howling suppression is proposed to solve the above problems in the echo control of full-duplex intercom. The simulation results and actual applications in metro demonstrate the effectiveness of the proposed algorithm.
Keywords：acoustic echo cancellationadaptive filteringhowling suppression
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 539-546 )