NDLI: A Robust Step-Size Control Technique Based on Proportionate Constraints on Filter Update for Acoustic Echo Cancellation

Content Provider	IET Digital Library
Author	Wu, Chao Jiang, Kaiyu Wang, Xiaofei Guo, Yanmeng Fu, Qiang Yan, Yonghong
Abstract	One of the main difficulties in Acoustic echo cancellation (AEC) is that the filter adaptation needs to vary according to different situations such as near-end interferences and echo path changes. In this paper, we propose a robust step-size control algorithm in frequency domain. The proposed method is based on the optimization of the square of the bin-wise a posteriori error. Constraint on the filter update is applied, which contributes to robustness to near-end interferences of the algorithm. The learning rate formula is derived first and then the relationship between the proposed algorithm and a robust statistics based approach is revealed. The method is extended to the Multidelay block frequency domain adaptive filter (MDF) so as to meet the demand of low delay in practical application. Moreover, the values of the constraints are designed to be updated proportionately to improve the convergence property. Simulation results demonstrate the superiority of the proposed algorithm.
Starting Page	692
Ending Page	699
Page Count	8
ISSN	10224653
Volume Number	25
e-ISSN	20755597
Issue Number	Issue 4, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/cje/25/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/cje.2016.06.001
Journal	Chinese Journal of Electronics
Publisher Date	2016-07-01
Access Restriction	Open
Rights Holder	© Chinese Institute of Electronics
Subject Keyword	Acoustic Echo Cancellation Acoustic Signal Processing Bin-wise A Posteriori Error Digital Signal Processing Echo Suppression Filter Update Filtering Method in Signal Processing Filtering Theory Frequency Domain Frequency Domain Analysis Mathematical Analysis MDF Multidelay Block Frequency Domain Adaptive Filter Near-end Interferences Optimisation Optimisation Technique Optimization Proportionate Constraint Robust Statistics Based Approach Robust Step-size Control Technique
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering

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