Title
Fast affine projections and the regularized modified filtered-error algorithm in multichannel active noise control
Author
Wesselink, J.M.
Berkhoff, A.P.
TNO Industrie en Techniek
Publication year
2008
Abstract
In this paper, real-time results are given for broadband multichannel active noise control using the regularized modified filtered-error algorithm. As compared to the standard filtered-error algorithm, the improved convergence rate and stability of the algorithm are obtained by using an inner-outer factorization of the transfer path between the actuators and the error sensors, combined with a delay compensation technique using double control filters and a regularization technique that preserves the factorization properties. The latter techniques allow the use of relatively simple and efficient adaptation schemes in which filtering of the reference signals is unnecessary. Results are given for a multichannel adaptive feedback implementation based on the internal model control principle. In feedforward systems based on this algorithm, colored reference signals may lead to reduced convergence rates. An adaptive extension based on the use of affine projections is presented, for which real-time results and simulations are given, showing the improved convergence rates of the regularized modified filtered-error algorithm for colored reference signals. © 2008 Acoustical Society of America.
Subject
Acoustics and Audiology
Acoustic variables control
Adaptive algorithms
Adaptive filtering
Algorithms
Environmental engineering
Error compensation
Factorization
Model predictive control
Signal processing
Standards
Adaptation schemes
Adaptive feedback
Affine projections
Control filters
Convergence rates
Delay-compensation
Error algorithms
Error sensors
Feedforward systems
Inner-outer factorization
Internal model control
Multi channel active noise control
Reduced convergence rates
Reference signals
Regularization techniques
Transfer paths
Active noise control
Feedback system
Molecular stability
Multichannel recorder
Noise measurement
Noise reduction
Noise standard
Piezoelectricity
Priority journal
Signal detection
Signal processing
Simulation
Acoustics
Algorithms
Artifacts
Computer Simulation
Equipment Design
Models, Theoretical
Reproducibility of Results
Signal Processing, Computer-Assisted
Sound
Time Factors
To reference this document use:
http://resolver.tudelft.nl/uuid:3a6481a9-83c2-48df-a30a-5e90f535d0c8
DOI
https://doi.org/10.1121/1.2945169
TNO identifier
240958
ISSN
0001-4966
Source
Journal of the Acoustical Society of America, 124 (2), 949-960
Document type
article