Comparative study of microphone arrays comprising omnidirectional and first-order directional microphones applied to remote virtual sensing
Comparative study of microphone arrays comprising omnidirectional and first-order directional microphones applied to remote virtual sensing
Virtual sensing techniques have been variously investigated within the context of active noise control, and it has been demonstrated that accurate estimation is critical to active control performance. The current work aims to compare the performance and robustness of monitoring microphone arrays used for virtual sensing, comprising omnidirectional pressure sensors and microphones with first-order directivity characteristics. Configurations with the standard first-order directivity patterns, dipole, cardioid, hyper-cardioid and super-cardioid, and their combinations are investigated and compared to conventional arrays with omnidirectional microphones. The estimation is performed through the formulation of observation filters that project the measured responses to the estimate of the sound field at the position of virtual microphones, using the Remote Microphone Technique. The study explores the performance and robustness of the monitoring configurations when used to estimate the pressure in a diffuse sound field. A closed-form formulation of the problem is presented, and simulations are performed to validate the theoretical results.
Remote Microphone Technique, Microphone Arrays, Virtual Sensing
Kappis, Achilles
db87741c-ba64-4e07-a1c8-24c497637765
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
18 September 2025
Kappis, Achilles
db87741c-ba64-4e07-a1c8-24c497637765
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Kappis, Achilles and Cheer, Jordan
(2025)
Comparative study of microphone arrays comprising omnidirectional and first-order directional microphones applied to remote virtual sensing.
Proceedings of Meetings on Acoustics, 56 (1), [055003].
(doi:10.1121/2.0002095).
Record type:
Meeting abstract
Abstract
Virtual sensing techniques have been variously investigated within the context of active noise control, and it has been demonstrated that accurate estimation is critical to active control performance. The current work aims to compare the performance and robustness of monitoring microphone arrays used for virtual sensing, comprising omnidirectional pressure sensors and microphones with first-order directivity characteristics. Configurations with the standard first-order directivity patterns, dipole, cardioid, hyper-cardioid and super-cardioid, and their combinations are investigated and compared to conventional arrays with omnidirectional microphones. The estimation is performed through the formulation of observation filters that project the measured responses to the estimate of the sound field at the position of virtual microphones, using the Remote Microphone Technique. The study explores the performance and robustness of the monitoring configurations when used to estimate the pressure in a diffuse sound field. A closed-form formulation of the problem is presented, and simulations are performed to validate the theoretical results.
Text
055003_1_2.0002095
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Accepted/In Press date: 8 August 2025
Published date: 18 September 2025
Venue - Dates:
188th Meeting of the Acoustical Society of America joint with 25th International Congress on Acoustics, , New Orleans, United States, 2025-05-18 - 2025-05-23
Keywords:
Remote Microphone Technique, Microphone Arrays, Virtual Sensing
Identifiers
Local EPrints ID: 506204
URI: http://eprints.soton.ac.uk/id/eprint/506204
ISSN: 1939-800X
PURE UUID: 6196744a-834b-4220-a01a-b070657d80af
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Date deposited: 30 Oct 2025 17:37
Last modified: 31 Oct 2025 03:04
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Author:
Achilles Kappis
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