Virtualized Microphone Array for Moving Sources Mapping
The acoustic analysis of a moving object, such as in pass-by or fly-over tests, is a very important and demanding issue. These types of analyses make it possible to characterize the machine in quite realistic conditions, but the typical difficulties related to source localization and characterizatio...
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/1424-8220/25/2/362 |
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| author | Francesca Sopranzetti Alessia Caputo Paolo Castellini |
| author_facet | Francesca Sopranzetti Alessia Caputo Paolo Castellini |
| author_sort | Francesca Sopranzetti |
| collection | DOAJ |
| description | The acoustic analysis of a moving object, such as in pass-by or fly-over tests, is a very important and demanding issue. These types of analyses make it possible to characterize the machine in quite realistic conditions, but the typical difficulties related to source localization and characterization are usually exacerbated by the need to take into consideration and to compensate for the object movement. In this paper, a technique based on acoustic beamforming is proposed, which is applicable to all those cases where the object under investigation is moving. In the proposed technique, the object’s movement is not regarded as a problem but as a resource, enabling a virtual increase in the number of microphone acquisitions. For a stationary acoustic emission from a moving object, each time segment of the acquired signal is treated as if it is coming from a microphone (virtual) positioned differently relative to the object’s reference system. This paper describes the technique and presents examples of results obtained from both simulated and real signals. Performance analysis is conducted and discussed in detail. |
| format | Article |
| id | doaj-art-29dd0465e45e4419bef65ce21ca7c32d |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-29dd0465e45e4419bef65ce21ca7c32d2025-01-24T13:48:39ZengMDPI AGSensors1424-82202025-01-0125236210.3390/s25020362Virtualized Microphone Array for Moving Sources MappingFrancesca Sopranzetti0Alessia Caputo1Paolo Castellini2Department of Industrial Engineering and Mathematical Sciences, Polytechnic University of Marche, 60131 Ancona, ItalyDepartment of Industrial Engineering and Mathematical Sciences, Polytechnic University of Marche, 60131 Ancona, ItalyDepartment of Industrial Engineering and Mathematical Sciences, Polytechnic University of Marche, 60131 Ancona, ItalyThe acoustic analysis of a moving object, such as in pass-by or fly-over tests, is a very important and demanding issue. These types of analyses make it possible to characterize the machine in quite realistic conditions, but the typical difficulties related to source localization and characterization are usually exacerbated by the need to take into consideration and to compensate for the object movement. In this paper, a technique based on acoustic beamforming is proposed, which is applicable to all those cases where the object under investigation is moving. In the proposed technique, the object’s movement is not regarded as a problem but as a resource, enabling a virtual increase in the number of microphone acquisitions. For a stationary acoustic emission from a moving object, each time segment of the acquired signal is treated as if it is coming from a microphone (virtual) positioned differently relative to the object’s reference system. This paper describes the technique and presents examples of results obtained from both simulated and real signals. Performance analysis is conducted and discussed in detail.https://www.mdpi.com/1424-8220/25/2/362virtualized arraybeamformingresolutionmoving source |
| spellingShingle | Francesca Sopranzetti Alessia Caputo Paolo Castellini Virtualized Microphone Array for Moving Sources Mapping Sensors virtualized array beamforming resolution moving source |
| title | Virtualized Microphone Array for Moving Sources Mapping |
| title_full | Virtualized Microphone Array for Moving Sources Mapping |
| title_fullStr | Virtualized Microphone Array for Moving Sources Mapping |
| title_full_unstemmed | Virtualized Microphone Array for Moving Sources Mapping |
| title_short | Virtualized Microphone Array for Moving Sources Mapping |
| title_sort | virtualized microphone array for moving sources mapping |
| topic | virtualized array beamforming resolution moving source |
| url | https://www.mdpi.com/1424-8220/25/2/362 |
| work_keys_str_mv | AT francescasopranzetti virtualizedmicrophonearrayformovingsourcesmapping AT alessiacaputo virtualizedmicrophonearrayformovingsourcesmapping AT paolocastellini virtualizedmicrophonearrayformovingsourcesmapping |