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.
Original language | Undefined |
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Article number | 10.1121/1.2945169 |
Pages (from-to) | 949-960 |
Number of pages | 12 |
Journal | The Journal of the Acoustical Society of America |
Volume | 124 |
Issue number | 2 |
DOIs | |
Publication status | Published - Aug 2008 |
Keywords
- EC Grant Agreement nr.: FP6/501084
- IR-62759
- METIS-256461
- EWI-15149