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Suboptimal controller design of global active noise control system for various acoustic environments

Conventional active noise control (ANC) systems in enclosed spaces are not easy to implement experimentally because they require a large number of microphones to measure sound pressure in global areas. Even if such systems are possible, if there are any changes in the locations of noise sources or s...

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Autores principales: Jeong, Ikchae, Park, Youngjin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10070359/
https://www.ncbi.nlm.nih.gov/pubmed/37012290
http://dx.doi.org/10.1038/s41598-023-32261-9
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author Jeong, Ikchae
Park, Youngjin
author_facet Jeong, Ikchae
Park, Youngjin
author_sort Jeong, Ikchae
collection PubMed
description Conventional active noise control (ANC) systems in enclosed spaces are not easy to implement experimentally because they require a large number of microphones to measure sound pressure in global areas. Even if such systems are possible, if there are any changes in the locations of noise sources or surrounding objects, or if ANC system moves to another enclosed space, an expensive and time-consuming experimental calibration is again required. Implementation of global ANC in enclosed spaces is thus difficult. Therefore, we designed a global ANC system that can be used in various acoustic environments. The main idea involves suboptimal open-loop controller design in the free field. By using an open-loop controller, a controller calibrated once can be used in various acoustic environments. A controller designed in the free field derive a suboptimal solution without bias toward a specific acoustic environment. For controller design in the free field, we propose an experimental calibration approach in which the arrangement and the number of control speakers and microphones are determined by the frequency range and radiation pattern of the noise source. We conducted simulations and experiments to show that the designed controller in the free field is sufficiently effective in other enclosed spaces.
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spelling pubmed-100703592023-04-05 Suboptimal controller design of global active noise control system for various acoustic environments Jeong, Ikchae Park, Youngjin Sci Rep Article Conventional active noise control (ANC) systems in enclosed spaces are not easy to implement experimentally because they require a large number of microphones to measure sound pressure in global areas. Even if such systems are possible, if there are any changes in the locations of noise sources or surrounding objects, or if ANC system moves to another enclosed space, an expensive and time-consuming experimental calibration is again required. Implementation of global ANC in enclosed spaces is thus difficult. Therefore, we designed a global ANC system that can be used in various acoustic environments. The main idea involves suboptimal open-loop controller design in the free field. By using an open-loop controller, a controller calibrated once can be used in various acoustic environments. A controller designed in the free field derive a suboptimal solution without bias toward a specific acoustic environment. For controller design in the free field, we propose an experimental calibration approach in which the arrangement and the number of control speakers and microphones are determined by the frequency range and radiation pattern of the noise source. We conducted simulations and experiments to show that the designed controller in the free field is sufficiently effective in other enclosed spaces. Nature Publishing Group UK 2023-04-03 /pmc/articles/PMC10070359/ /pubmed/37012290 http://dx.doi.org/10.1038/s41598-023-32261-9 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Jeong, Ikchae
Park, Youngjin
Suboptimal controller design of global active noise control system for various acoustic environments
title Suboptimal controller design of global active noise control system for various acoustic environments
title_full Suboptimal controller design of global active noise control system for various acoustic environments
title_fullStr Suboptimal controller design of global active noise control system for various acoustic environments
title_full_unstemmed Suboptimal controller design of global active noise control system for various acoustic environments
title_short Suboptimal controller design of global active noise control system for various acoustic environments
title_sort suboptimal controller design of global active noise control system for various acoustic environments
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10070359/
https://www.ncbi.nlm.nih.gov/pubmed/37012290
http://dx.doi.org/10.1038/s41598-023-32261-9
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