Fast affine projections and the regularized modified filtered-error algorithm in multichannel active noise control

Autor: Wesselink, J.M., Berkhoff, A.P.
Přispěvatelé: TNO Industrie en Techniek
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Signal processing
Standards
Time Factors
Noise measurement
Reduced convergence rates
Piezoelectricity
Environmental engineering
Convergence rates
Adaptive filtering
Acoustic variables control
Molecular stability
Error compensation
Feedforward systems
Regularization techniques
Computer Simulation
Model predictive control
Factorization
Error sensors
Adaptive feedback
Noise reduction
Priority journal
Error algorithms
Affine projections
Delay-compensation
Reference signals
Multi channel active noise control
Reproducibility of Results
Signal Processing
Computer-Assisted
Acoustics
Equipment Design
Models
Theoretical
Adaptive algorithms
Internal model control
Sound
Adaptation schemes
Transfer paths
Multichannel recorder
Control filters
Active noise control
Artifacts
Acoustics and Audiology
Algorithms
Simulation
Inner-outer factorization
Feedback system
Noise standard
Signal detection
Zdroj: Journal of the Acoustical Society of America, 2, 124, 949-960
Popis: 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.
Databáze: OpenAIRE
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