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Sound field control in the automotive environment

Sound field control in the automotive environment
Sound field control in the automotive environment
Active control of engine and road noise in the automotive environment has been investigated within the automotive industry for around 20 years. This interest is due to both the potential to reduce vehicle noise, and the ability to remove passive noise control treatments and, therefore, improve fuel efficiency. The most successful commercial systems have generally used the loudspeakers of the car audio system to globally control engine or road noise at low frequencies. It is also possible to use such control systems to manipulate the sound quality of the engine, through targeted attenuation and enhancement of particular engine orders. In a similar way, an array of loudspeakers can be used to control the spatial distribution of reproduced sound within the automotive environment, in order to create a localised region of audio reproduction. This paper will first outline the limitations of global active control in the automotive environment, and then demonstrate how some of these limitations may be overcome by using a local active control strategy. The physical limitations of active noise control will then be linked to the limitations on the generation of localised audio sound zones within the car cabin. Practical examples of a number different automotive sound field control systems will be presented in order to demonstrate their potential performance.
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Jung, Woomin
c9f3e525-493b-4a9c-85ec-91ee0e41a717
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Jung, Woomin
c9f3e525-493b-4a9c-85ec-91ee0e41a717

Cheer, Jordan, Elliott, Stephen and Jung, Woomin (2015) Sound field control in the automotive environment. 3rd International ATZ Automotive Acoustics Conference, Switzerland. 23 - 24 Jun 2015. 15 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Active control of engine and road noise in the automotive environment has been investigated within the automotive industry for around 20 years. This interest is due to both the potential to reduce vehicle noise, and the ability to remove passive noise control treatments and, therefore, improve fuel efficiency. The most successful commercial systems have generally used the loudspeakers of the car audio system to globally control engine or road noise at low frequencies. It is also possible to use such control systems to manipulate the sound quality of the engine, through targeted attenuation and enhancement of particular engine orders. In a similar way, an array of loudspeakers can be used to control the spatial distribution of reproduced sound within the automotive environment, in order to create a localised region of audio reproduction. This paper will first outline the limitations of global active control in the automotive environment, and then demonstrate how some of these limitations may be overcome by using a local active control strategy. The physical limitations of active noise control will then be linked to the limitations on the generation of localised audio sound zones within the car cabin. Practical examples of a number different automotive sound field control systems will be presented in order to demonstrate their potential performance.

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Cheer_AAC2015.pdf - Author's Original
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More information

Published date: 23 June 2015
Venue - Dates: 3rd International ATZ Automotive Acoustics Conference, Switzerland, 2015-06-23 - 2015-06-24
Organisations: Signal Processing & Control Grp

Identifiers

Local EPrints ID: 378380
URI: http://eprints.soton.ac.uk/id/eprint/378380
PURE UUID: f45cb2f2-e6ee-4a87-8423-970ed898701f
ORCID for Jordan Cheer: ORCID iD orcid.org/0000-0002-0552-5506

Catalogue record

Date deposited: 02 Jul 2015 11:13
Last modified: 06 Jun 2018 12:32

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