Cargando…
Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio
The COVID-19 pandemic affected the acoustic environment worldwide, entailing relevant reductions of equivalent noise levels (L(Aeq)) during this exceptional period. In the context of the LIFE+ DYNAMAP project, two wireless acoustic sensor networks were deployed in Milan and Rome. Taking advantage of...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Acoustical Society of America
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8942110/ https://www.ncbi.nlm.nih.gov/pubmed/35364959 http://dx.doi.org/10.1121/10.0009783 |
_version_ | 1784673237259517952 |
---|---|
author | Alías, Francesc Alsina-Pagès, Rosa Ma. |
author_facet | Alías, Francesc Alsina-Pagès, Rosa Ma. |
author_sort | Alías, Francesc |
collection | PubMed |
description | The COVID-19 pandemic affected the acoustic environment worldwide, entailing relevant reductions of equivalent noise levels (L(Aeq)) during this exceptional period. In the context of the LIFE+ DYNAMAP project, two wireless acoustic sensor networks were deployed in Milan and Rome. Taking advantage of the built-in identification of anomalous noise events (ANE) in the sensors, this work analyses the effects of the COVID-19 lockdown in both urban and suburban acoustic environments from January to June 2020, considering the distribution of ANEs and the intermittency ratio (IR) as an indicator of the impact of noise on population. The results show statistically significant increments of ANEs in Rome during the lockdown, mainly on weekends, and especially at night, despite the significant decrease in salient events. Differently, ANEs decrease during the lockdown in Milan, mostly at daytime, as a result of population confinement. Although the IR increases in several urban locations, most sensed locations show a relevant decrease in IR during the confinement, which represents a noteworthy reduction of the negative impact of noise in the population of both cities. During the post-lockdown period, all the scores start to return to those observed in the pre-lockdown, but still remaining higher than in 2019. |
format | Online Article Text |
id | pubmed-8942110 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Acoustical Society of America |
record_format | MEDLINE/PubMed |
spelling | pubmed-89421102022-03-31 Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio Alías, Francesc Alsina-Pagès, Rosa Ma. J Acoust Soc Am Special Issue on Covid-19 Pandemic Acoustic Effects The COVID-19 pandemic affected the acoustic environment worldwide, entailing relevant reductions of equivalent noise levels (L(Aeq)) during this exceptional period. In the context of the LIFE+ DYNAMAP project, two wireless acoustic sensor networks were deployed in Milan and Rome. Taking advantage of the built-in identification of anomalous noise events (ANE) in the sensors, this work analyses the effects of the COVID-19 lockdown in both urban and suburban acoustic environments from January to June 2020, considering the distribution of ANEs and the intermittency ratio (IR) as an indicator of the impact of noise on population. The results show statistically significant increments of ANEs in Rome during the lockdown, mainly on weekends, and especially at night, despite the significant decrease in salient events. Differently, ANEs decrease during the lockdown in Milan, mostly at daytime, as a result of population confinement. Although the IR increases in several urban locations, most sensed locations show a relevant decrease in IR during the confinement, which represents a noteworthy reduction of the negative impact of noise in the population of both cities. During the post-lockdown period, all the scores start to return to those observed in the pre-lockdown, but still remaining higher than in 2019. Acoustical Society of America 2022-03 2022-03-11 /pmc/articles/PMC8942110/ /pubmed/35364959 http://dx.doi.org/10.1121/10.0009783 Text en © 2022 Acoustical Society of America. 0001-4966/2022/151(3)/1676/8/$30.00 https://creativecommons.org/licenses/by/4.0/All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | Special Issue on Covid-19 Pandemic Acoustic Effects Alías, Francesc Alsina-Pagès, Rosa Ma. Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio |
title | Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio |
title_full | Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio |
title_fullStr | Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio |
title_full_unstemmed | Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio |
title_short | Effects of COVID-19 lockdown in Milan urban and Rome suburban acoustic environments: Anomalous noise events and intermittency ratio |
title_sort | effects of covid-19 lockdown in milan urban and rome suburban acoustic environments: anomalous noise events and intermittency ratio |
topic | Special Issue on Covid-19 Pandemic Acoustic Effects |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8942110/ https://www.ncbi.nlm.nih.gov/pubmed/35364959 http://dx.doi.org/10.1121/10.0009783 |
work_keys_str_mv | AT aliasfrancesc effectsofcovid19lockdowninmilanurbanandromesuburbanacousticenvironmentsanomalousnoiseeventsandintermittencyratio AT alsinapagesrosama effectsofcovid19lockdowninmilanurbanandromesuburbanacousticenvironmentsanomalousnoiseeventsandintermittencyratio |