带有啸叫抑制的地铁对讲系统声学回声控制算法及应用  

Echo control algorithm with howling suppression on metro intercom system and its application

作　　者：王国政 刘全利[1] WANG Guo-zheng;LIU Quan-li(School of Control Science and Engineering, Dalian University of Technology, Dalian Liaoning 116024, China)

机构地区：[1]大连理工大学控制科学与工程学院,辽宁大连116024

出　　处：《控制理论与应用》2018年第4期539-546,共8页Control Theory & Applications

基　　金：国家自然科学基金项目(61273037)资助~~

摘　　要：地铁中的对讲系统是乘客信息系统的重要组成部分.在实际应用中,由于地铁运行环境嘈杂及硬件设备的限制,使得全双工免提对讲过程中存在很大的声学回声,啸叫现象也时有发生.因此目前地铁中的对讲系统基本都在半双工状态下运行.基于此,本文提出了一种结合啸叫抑制的归一化最小均方算法,来解决全双工对讲回声控制中出现的声学回声及啸叫问题,并通过仿真及地铁项目中的实际应用表明了该算法的有效性.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.

关 键 词：声学回声消除 自适应滤波 啸叫抑制 

分 类 号：TN912.35[电子电信—通信与信息系统]