A simplified adaptive feedback active noise control system

Wu, L, Qiu, X and Guo, Y 2014, 'A simplified adaptive feedback active noise control system', Applied Acoustics, vol. 81, pp. 40-46.


Document type: Journal Article
Collection: Journal Articles

Title A simplified adaptive feedback active noise control system
Author(s) Wu, L
Qiu, X
Guo, Y
Year 2014
Journal name Applied Acoustics
Volume number 81
Start page 40
End page 46
Total pages 7
Publisher Pergamon Press
Abstract In the adaptive feedback active noise control system based on the internal model control (IMC) structure, the reference signal is regenerated by synthesizing the error signal and the secondary signal filtered with the estimation of the secondary path, hence more computation load and extra programming are required. Motivated by the engineering truth that the primary noise cannot be completely cancelled in most practical active noise control applications and the error signal still contains some portions of the primary noise, a simplified adaptive feedback active noise control system is proposed in this paper, which adopts the error signal directly as the reference signal in an adaptive feedforward control system and utilizes the leaky filtered-x LMS algorithm to update the controller. The convergence properties of the proposed system are investigated and its advantages are discussed by comparing with other feedback control systems as well as the weakness. Finally, simulations and experiments are carried out to demonstrate the effectiveness of the proposed system.
Subject Signal Processing
Keyword(s) Active noise control
Adaptive feedback
Internal model control
DOI - identifier 10.1016/j.apacoust.2014.02.006
Copyright notice © 2014 Elsevier Ltd. All rights reserved.
ISSN 0003-682X
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