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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：控制科学与工程学院
学科：控制理论与控制工程
办公地点：创新园大厦A614
联系方式：刘全利 大连理工大学控制科学与工程学院 邮编：116024 电话：0411-84705516
电子邮箱：liuql@dlut.edu.cn
Adaptive feedback cancellation with prediction error method and howling suppression in train public address system
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论文类型：期刊论文
发表时间：2020-02-01
发表刊物：SIGNAL PROCESSING
收录刊物：EI、SCIE
卷号：167
ISSN号：0165-1684
关键字：Adaptive feedback cancellation; Public address; Variable step-size; Affine projection algorithm; Prediction error method; Howling suppression
摘要：Train public address (PA) system is an important component of Passenger Information System. Acoustic feedback is a well-known problem in public address systems. It will cause howling under certain conditions, which can severely degrade sound quality and limit the maximum allowable amplification of the PA systems. The general adaptive feedback cancellation (AFC) algorithms lead to a biased estimation because of the correlation between source and feedback signals. In order to solve the problem and achieve both fast convergence and low steady-state misalignment, a novel variable step-size improved proportionate affine projection algorithm (IPAPA) based on mixed error cost function with prediction error method (PEM) and howling suppression is proposed in this paper. The experimental results demonstrate the effectiveness of the proposed algorithm. (C) 2019 Elsevier B.V. All rights reserved.