Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring Units
DYNAMAP, a European Life project, aims at giving a real image of the noise generated by vehicular traffic in urban areas developing a dynamic acoustic map based on a limited number of low-cost permanent noise monitoring stations. The system has been implemented in two pilot areas located in the aggl...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/2/412 |
| _version_ | 1811185192336883712 |
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| author | Roberto Benocci Chiara Confalonieri Hector Eduardo Roman Fabio Angelini Giovanni Zambon |
| author_facet | Roberto Benocci Chiara Confalonieri Hector Eduardo Roman Fabio Angelini Giovanni Zambon |
| author_sort | Roberto Benocci |
| collection | DOAJ |
| description | DYNAMAP, a European Life project, aims at giving a real image of the noise generated by vehicular traffic in urban areas developing a dynamic acoustic map based on a limited number of low-cost permanent noise monitoring stations. The system has been implemented in two pilot areas located in the agglomeration of Milan (Italy) and along the Motorway A90 (Rome-Italy). The paper reports the final assessment of the system installed in the pilot area of Milan. Traffic noise data collected by the monitoring stations, each one representative of a number of roads (groups) sharing similar characteristics (e.g., daily traffic flow), are used to build-up a “real-time” noise map. In particular, we focused on the results of the testing campaign (21 sites distributed over the pilot area and 24 h duration of each recording). It allowed evaluating the accuracy and reliability of the system by comparing the predicted noise level of DYNAMAP with field measurements in randomly selected sites. To this end, a statistical analysis has been implemented to determine the error associated with such prediction, and to optimize the system by developing a correction procedure aimed at keeping the error below some acceptable threshold. The steps and the results of this procedure are given in detail. It is shown that it is possible to describe a complex road network on the basis of a statistical approach, complemented by empirical data, within a threshold of 3 dB provided that the traffic flow model achieves a comparable accuracy within each single groups of roads in the network. |
| first_indexed | 2024-04-11T13:25:17Z |
| format | Article |
| id | doaj.art-0ab960ee6903446db20333c120ea1a4b |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:25:17Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0ab960ee6903446db20333c120ea1a4b2022-12-22T04:22:05ZengMDPI AGSensors1424-82202020-01-0120241210.3390/s20020412s20020412Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring UnitsRoberto Benocci0Chiara Confalonieri1Hector Eduardo Roman2Fabio Angelini3Giovanni Zambon4Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, ItalyDepartment of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, ItalyDepartment of Physics “G. Occhialini”, University of Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, ItalyDepartment of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, ItalyDepartment of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, ItalyDYNAMAP, a European Life project, aims at giving a real image of the noise generated by vehicular traffic in urban areas developing a dynamic acoustic map based on a limited number of low-cost permanent noise monitoring stations. The system has been implemented in two pilot areas located in the agglomeration of Milan (Italy) and along the Motorway A90 (Rome-Italy). The paper reports the final assessment of the system installed in the pilot area of Milan. Traffic noise data collected by the monitoring stations, each one representative of a number of roads (groups) sharing similar characteristics (e.g., daily traffic flow), are used to build-up a “real-time” noise map. In particular, we focused on the results of the testing campaign (21 sites distributed over the pilot area and 24 h duration of each recording). It allowed evaluating the accuracy and reliability of the system by comparing the predicted noise level of DYNAMAP with field measurements in randomly selected sites. To this end, a statistical analysis has been implemented to determine the error associated with such prediction, and to optimize the system by developing a correction procedure aimed at keeping the error below some acceptable threshold. The steps and the results of this procedure are given in detail. It is shown that it is possible to describe a complex road network on the basis of a statistical approach, complemented by empirical data, within a threshold of 3 dB provided that the traffic flow model achieves a comparable accuracy within each single groups of roads in the network.https://www.mdpi.com/1424-8220/20/2/412noise mappingnoise mitigationdynamap project |
| spellingShingle | Roberto Benocci Chiara Confalonieri Hector Eduardo Roman Fabio Angelini Giovanni Zambon Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring Units Sensors noise mapping noise mitigation dynamap project |
| title | Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring Units |
| title_full | Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring Units |
| title_fullStr | Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring Units |
| title_full_unstemmed | Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring Units |
| title_short | Accuracy of the Dynamic Acoustic Map in a Large City Generated by Fixed Monitoring Units |
| title_sort | accuracy of the dynamic acoustic map in a large city generated by fixed monitoring units |
| topic | noise mapping noise mitigation dynamap project |
| url | https://www.mdpi.com/1424-8220/20/2/412 |
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