On the Impact of Anomalous Noise Events on Road Traffic Noise Mapping in Urban and Suburban Environments

被引:22
|
作者
Orga, Ferran [1 ]
Alias, Francesc [1 ]
Ma Alsina-Pages, Rosa [1 ]
机构
[1] La Salle Univ Ramon Llull, GTM Grp Recerca Tecnol Media, C Quatre Camins 30, Barcelona 08022, Spain
关键词
anomalous noise event; wireless acoustic sensor network; noise pollution; L-Aeq; acoustic impact; road traffic noise; noise map; health effects; POLLUTION; EXPOSURE; CITY;
D O I
10.3390/ijerph15010013
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Noise pollution is a critical factor affecting public health, the relationship between road traffic noise (RTN) and several diseases in urban areas being especially disturbing. The Environmental Noise Directive 2002/49/EC and the CNOSSOS-EU framework are the main instruments of the European Union to identify and combat noise pollution, requiring Member States to compose and publish noise maps and noise management action plans every five years. Nowadays, the noise maps are starting to be tailored by means of Wireless Acoustic Sensor Networks (WASN). In order to exclusively monitor the impact of RTN on the well-being of citizens through WASN-based approaches, those noise sources unrelated to RTN denoted as Anomalous Noise Events (ANEs) should be removed from the noise map generation. This paper introduces an analysis methodology considering both Signal-to-Noise Ratio (SNR) and duration of ANEs to evaluate their impact on the A-weighted equivalent RTN level calculation for different integration times. The experiments conducted on 9 h of real-life data from the WASN-based DYNAMAP project show that both individual high-impact events and aggregated medium-impact events bias significantly the equivalent noise levels of the RTN map, making any derived study about public health impact inaccurate.
引用
收藏
页数:16
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