TY - GEN
T1 - A simplified method for online acoustic feedback path modeling in multichannel active noise control systems
AU - Akhtar, M. T.
AU - Abe, M.
AU - Kawamata, M.
AU - Mitsuhashi, W.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - This paper investigates the issue of acoustic feedback in multichannel active noise control (ANC) systems. The presence of acoustic feedback degrades the performance of the ANC systems, and in the worst case the ANC system may become unstable. Here we propose a simplified solution for acoustic feedback modeling and neutralization during the online operation of multichannel ANC systems. The computational complexity of the proposed method is lower than the existing method. Computer simulations are carried out for a 1 × 2 × 2 system comprising one reference microphone, two secondary loudspeakers and two error microphones. It is demonstrated that the proposed method achieves better performance than the existing method, and at somewhat lower computational complexity.
AB - This paper investigates the issue of acoustic feedback in multichannel active noise control (ANC) systems. The presence of acoustic feedback degrades the performance of the ANC systems, and in the worst case the ANC system may become unstable. Here we propose a simplified solution for acoustic feedback modeling and neutralization during the online operation of multichannel ANC systems. The computational complexity of the proposed method is lower than the existing method. Computer simulations are carried out for a 1 × 2 × 2 system comprising one reference microphone, two secondary loudspeakers and two error microphones. It is demonstrated that the proposed method achieves better performance than the existing method, and at somewhat lower computational complexity.
KW - Acoustic feedback
KW - Adaptive signal processing
KW - Multichannel active noise control
KW - Online feedback-path modeling
UR - http://www.scopus.com/inward/record.url?scp=56749184921&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=56749184921&partnerID=8YFLogxK
U2 - 10.1109/SICE.2008.4654621
DO - 10.1109/SICE.2008.4654621
M3 - Conference contribution
AN - SCOPUS:56749184921
SN - 9784907764296
T3 - Proceedings of the SICE Annual Conference
SP - 50
EP - 54
BT - Proceedings of SICE Annual Conference 2008 - International Conference on Instrumentation, Control and Information Technology
T2 - SICE Annual Conference 2008 - International Conference on Instrumentation, Control and Information Technology
Y2 - 20 August 2008 through 22 August 2008
ER -