Suboptimal controller design of global active noise control system for various acoustic environments
Abstract 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 sou...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-32261-9 |
| _version_ | 1797850111950192640 |
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| author | Ikchae Jeong Youngjin Park |
| author_facet | Ikchae Jeong Youngjin Park |
| author_sort | Ikchae Jeong |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-04-09T18:55:04Z |
| format | Article |
| id | doaj.art-9871a8298c614a079fa64971dc38960a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T18:55:04Z |
| publishDate | 2023-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-9871a8298c614a079fa64971dc38960a2023-04-09T11:14:28ZengNature PortfolioScientific Reports2045-23222023-04-0113111010.1038/s41598-023-32261-9Suboptimal controller design of global active noise control system for various acoustic environmentsIkchae Jeong0Youngjin Park1Department of Mechanical Engineering, Korea Advanced Institute of Science and TechnologyDepartment of Mechanical Engineering, Korea Advanced Institute of Science and TechnologyAbstract 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.https://doi.org/10.1038/s41598-023-32261-9 |
| spellingShingle | Ikchae Jeong Youngjin Park Suboptimal controller design of global active noise control system for various acoustic environments Scientific Reports |
| 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 |
| url | https://doi.org/10.1038/s41598-023-32261-9 |
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