TY - GEN
T1 - Construction of IIR filter for adaptive noise control system of boat noise reduction
AU - Fukatsu, Haruki
AU - Muto, Kenji
N1 - Publisher Copyright:
© 2019 Proceedings of the International Congress on Acoustics. All rights reserved.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Noise from boats is often loud and can reach apartments or the offices located near Tokyo's canals. The aim of this research is to create quiet spaces in buildings using a sound damping system with adaptive noise control. This system does not use a reference microphone because there is sometimes no place to put it outside a window. We propose a tap length for an infinite impulse response (IIR) filter as an adaptive noise control system for reducing boat noise. In this paper, we analyzed the characteristics of boat noise as well as the adaptive damping filter. We investigated the step size and the tap numbers of the IIR filter to improve the performance of the adaptive noise control system with a digital signal processor. The results showed that boat noise is composed of a peak frequency and some other dominant frequencies caused by the boat engine which produces long continuous noise. We therefore designed the IIR filter to adapt to these frequencies. As a result, the system effectively reduced boat noise in a computer simulation.
AB - Noise from boats is often loud and can reach apartments or the offices located near Tokyo's canals. The aim of this research is to create quiet spaces in buildings using a sound damping system with adaptive noise control. This system does not use a reference microphone because there is sometimes no place to put it outside a window. We propose a tap length for an infinite impulse response (IIR) filter as an adaptive noise control system for reducing boat noise. In this paper, we analyzed the characteristics of boat noise as well as the adaptive damping filter. We investigated the step size and the tap numbers of the IIR filter to improve the performance of the adaptive noise control system with a digital signal processor. The results showed that boat noise is composed of a peak frequency and some other dominant frequencies caused by the boat engine which produces long continuous noise. We therefore designed the IIR filter to adapt to these frequencies. As a result, the system effectively reduced boat noise in a computer simulation.
KW - Adaptive noise control
KW - Boat noise
KW - Digital signal processor
KW - Noise investigation
UR - http://www.scopus.com/inward/record.url?scp=85099330591&partnerID=8YFLogxK
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U2 - 10.18154/RWTH-CONV-239077
DO - 10.18154/RWTH-CONV-239077
M3 - Conference contribution
AN - SCOPUS:85099330591
T3 - Proceedings of the International Congress on Acoustics
SP - 4334
EP - 4339
BT - Proceedings of the 23rd International Congress on Acoustics
A2 - Ochmann, Martin
A2 - Michael, Vorlander
A2 - Fels, Janina
PB - International Commission for Acoustics (ICA)
T2 - 23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
Y2 - 9 September 2019 through 23 September 2019
ER -