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Causality and robustness in the remote sensing of acoustic pressure, with application to local active sound control

Causality and robustness in the remote sensing of acoustic pressure, with application to local active sound control
Causality and robustness in the remote sensing of acoustic pressure, with application to local active sound control
It is often difficult to position microphones at the ear position of listeners to directly monitor the perceived sound, in local active sound control systems for example. The pressure at these positions can be estimated using virtual sensing with an array of remote monitoring microphones, however, if some assumptions are made about the sound field. In active control, the sound field due to the secondary sources can be reasonably easily accounted for but the primary sound field, which is to be controlled, will in general be due to a number of potentially correlated primary sources, whose positions are unknown and may vary in time. The virtual sensing in this application thus needs to be robust to the properties of the primary sound field, both in the choice of the remote monitoring microphone positions and in the design of the filters used to process these to estimate the pressure at the desired position. If the controller is feedforward, the causality of these filters may also be relaxed if the adaptive algorithm is designed to minimise a delayed virtual error signal. This paper describes examples of such robust design, particularly applied to the local active control of road noise in vehicles
2379-190X
8484-8488
IEEE
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Jung, Woomin
d8734210-d7b3-48dc-ace0-3724cd864f37
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Jung, Woomin
d8734210-d7b3-48dc-ace0-3724cd864f37
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc

Elliott, Stephen, Jung, Woomin and Cheer, Jordan (2019) Causality and robustness in the remote sensing of acoustic pressure, with application to local active sound control. In ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE. pp. 8484-8488 . (doi:10.1109/ICASSP.2019.8682474).

Record type: Conference or Workshop Item (Paper)

Abstract

It is often difficult to position microphones at the ear position of listeners to directly monitor the perceived sound, in local active sound control systems for example. The pressure at these positions can be estimated using virtual sensing with an array of remote monitoring microphones, however, if some assumptions are made about the sound field. In active control, the sound field due to the secondary sources can be reasonably easily accounted for but the primary sound field, which is to be controlled, will in general be due to a number of potentially correlated primary sources, whose positions are unknown and may vary in time. The virtual sensing in this application thus needs to be robust to the properties of the primary sound field, both in the choice of the remote monitoring microphone positions and in the design of the filters used to process these to estimate the pressure at the desired position. If the controller is feedforward, the causality of these filters may also be relaxed if the adaptive algorithm is designed to minimise a delayed virtual error signal. This paper describes examples of such robust design, particularly applied to the local active control of road noise in vehicles

Text
ICASSP 2019 Elliott Jung Cheer - Accepted Manuscript
Available under License Creative Commons Attribution.
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More information

e-pub ahead of print date: 17 April 2019
Published date: May 2019
Venue - Dates: ICASSP 2019: 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Brighton Conference Centre, Brighton, United Kingdom, 2019-05-12 - 2019-05-17

Identifiers

Local EPrints ID: 431213
URI: http://eprints.soton.ac.uk/id/eprint/431213
ISSN: 2379-190X
PURE UUID: 9a6ed013-e225-455c-ad0d-87b48eb89e4f
ORCID for Jordan Cheer: ORCID iD orcid.org/0000-0002-0552-5506

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Date deposited: 28 May 2019 16:30
Last modified: 16 Mar 2024 04:05

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Contributors

Author: Stephen Elliott
Author: Woomin Jung
Author: Jordan Cheer ORCID iD

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