Topology optimisation of microphone arrays for remote microphone virtual sensing in diffuse sound fields
Topology optimisation of microphone arrays for remote microphone virtual sensing in diffuse sound fields
Past research has shown that virtual sensing techniques can enhance the performance of active noise control systems by projecting the control points towards remote locations of interest. However, accurate sound field estimation using virtual sensing is critical to the performance of such active control systems and depends on both signal processing and the physical microphone array. Typically, microphone placement is determined by practical considerations such as convenience, spatial constraints and cost, resulting in limited exploration of optimal microphone positioning. The current study employs a genetic algorithm to identify optimal microphone array configurations for accurate estimation of the pressure in a diffuse sound field, utilising the Remote Microphone Technique. The optimality criterion is defined as the estimation performance or the robustness of the derived topologies to practical uncertainties. The resulting optimal configurations are evaluated against a conventional uniform linear microphone array, which consist of sub-array elements capable of utilising both pressure and pressure gradient information for enhanced estimation accuracy.
Virtual sensing, Remote Microphone Technique, Microphone arrays
Kappis, Achilles
db87741c-ba64-4e07-a1c8-24c497637765
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Kappis, Achilles
db87741c-ba64-4e07-a1c8-24c497637765
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Kappis, Achilles and Cheer, Jordan
(2025)
Topology optimisation of microphone arrays for remote microphone virtual sensing in diffuse sound fields.
Forum Acusticum Euronoise 2025, Malaga, Spain.
23 - 26 Jun 2025.
8 pp
.
(In Press)
Record type:
Conference or Workshop Item
(Paper)
Abstract
Past research has shown that virtual sensing techniques can enhance the performance of active noise control systems by projecting the control points towards remote locations of interest. However, accurate sound field estimation using virtual sensing is critical to the performance of such active control systems and depends on both signal processing and the physical microphone array. Typically, microphone placement is determined by practical considerations such as convenience, spatial constraints and cost, resulting in limited exploration of optimal microphone positioning. The current study employs a genetic algorithm to identify optimal microphone array configurations for accurate estimation of the pressure in a diffuse sound field, utilising the Remote Microphone Technique. The optimality criterion is defined as the estimation performance or the robustness of the derived topologies to practical uncertainties. The resulting optimal configurations are evaluated against a conventional uniform linear microphone array, which consist of sub-array elements capable of utilising both pressure and pressure gradient information for enhanced estimation accuracy.
Text
Topology_optimisation_of_microphone_arrays_for_remote_microphone_virtual_sensing_in_diffuse_sound_fields
- Accepted Manuscript
More information
Accepted/In Press date: 25 April 2025
Venue - Dates:
Forum Acusticum Euronoise 2025, Malaga, Spain, 2025-06-23 - 2025-06-26
Keywords:
Virtual sensing, Remote Microphone Technique, Microphone arrays
Identifiers
Local EPrints ID: 503310
URI: http://eprints.soton.ac.uk/id/eprint/503310
PURE UUID: f5217b01-fea3-45f5-922e-b65f4733f7e1
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Date deposited: 29 Jul 2025 16:35
Last modified: 22 Aug 2025 02:39
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Contributors
Author:
Achilles Kappis
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