Multichannel feedback control of interior road noise
Multichannel feedback control of interior road noise
Active noise control systems offer a potential method of reducing the weight of passive acoustic treatments in vehicles and, therefore, increasing a its fuel efficiency. The active control of engine noise can be implemented cost-effectively by using the car audio loudspeakers as control sources and an array of low-cost microphones as error sensors. Such systems have been commercially implemented, but without also controlling road noise their subjective benefits may be limited. The active control of road noise using a feedforward control strategy has also been practically demonstrated, but these systems require a number of accelerometers to be mounted to the vehicle's structure to obtain a coherent reference signal and, therefore, lead to a significant implementation cost. This paper describes a multichannel feedback system for the active control of road noise, which uses an array of microphones and car audio loudspeakers that are common with ta feedforward engine noise control system. The design of the multichannel feedback controller is described and its performance is validated using offline simulations employing data measured in a small city car.
030118-[9pp]
Acoustical Society of America
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
2 June 2013
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Cheer, Jordan and Elliott, Stephen
(2013)
Multichannel feedback control of interior road noise.
In Proceedings of Meetings on Acoustics.
Acoustical Society of America.
.
(doi:10.1121/1.4799168).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Active noise control systems offer a potential method of reducing the weight of passive acoustic treatments in vehicles and, therefore, increasing a its fuel efficiency. The active control of engine noise can be implemented cost-effectively by using the car audio loudspeakers as control sources and an array of low-cost microphones as error sensors. Such systems have been commercially implemented, but without also controlling road noise their subjective benefits may be limited. The active control of road noise using a feedforward control strategy has also been practically demonstrated, but these systems require a number of accelerometers to be mounted to the vehicle's structure to obtain a coherent reference signal and, therefore, lead to a significant implementation cost. This paper describes a multichannel feedback system for the active control of road noise, which uses an array of microphones and car audio loudspeakers that are common with ta feedforward engine noise control system. The design of the multichannel feedback controller is described and its performance is validated using offline simulations employing data measured in a small city car.
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Published date: 2 June 2013
Additional Information:
Session 5aEA: Sound emission from vehicle and rotating machinery
Venue - Dates:
International Congress on Acoustics 2013, 2013-06-02
Organisations:
Signal Processing & Control Grp
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Local EPrints ID: 353725
URI: http://eprints.soton.ac.uk/id/eprint/353725
PURE UUID: d8797a9b-0d77-47cb-8036-eb8a88a91397
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Date deposited: 18 Jun 2013 10:37
Last modified: 15 Mar 2024 03:37
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