The spatial properties and local active control of road noise
The spatial properties and local active control of road noise
The spatial performance of local active control systems depends on the correlation properties of the primary sound field. Previously this sound field has generally been assumed to be diffuse when simulating active control performance. In this study the spatial properties of the primary sound field due to road noise in a car were measured using the spectral density matrix calculated from the outputs of an array of 25 microphones in front of a headrest, into which a number of secondary sources had been integrated. The spatial correlation properties of the primary field were estimated and inverse methods were also used to estimate the sources of the road noise. Predictions were then made of the performance of local active sound controllers using the secondary sources in the headrest
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Jung, Woomin
c9f3e525-493b-4a9c-85ec-91ee0e41a717
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
May 2015
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Jung, Woomin
c9f3e525-493b-4a9c-85ec-91ee0e41a717
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Elliott, Stephen J., Jung, Woomin and Cheer, Jordan
(2015)
The spatial properties and local active control of road noise.
EuroNoise, Maastricht, Netherlands.
31 May - 03 Jun 2015.
6 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The spatial performance of local active control systems depends on the correlation properties of the primary sound field. Previously this sound field has generally been assumed to be diffuse when simulating active control performance. In this study the spatial properties of the primary sound field due to road noise in a car were measured using the spectral density matrix calculated from the outputs of an array of 25 microphones in front of a headrest, into which a number of secondary sources had been integrated. The spatial correlation properties of the primary field were estimated and inverse methods were also used to estimate the sources of the road noise. Predictions were then made of the performance of local active sound controllers using the secondary sources in the headrest
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Published date: May 2015
Venue - Dates:
EuroNoise, Maastricht, Netherlands, 2015-05-31 - 2015-06-03
Organisations:
Signal Processing & Control Grp
Identifiers
Local EPrints ID: 378603
URI: http://eprints.soton.ac.uk/id/eprint/378603
PURE UUID: b47ef83b-68b7-4245-9055-2c13b9012562
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Date deposited: 13 Jul 2015 11:02
Last modified: 15 Mar 2024 03:37
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Contributors
Author:
Woomin Jung
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