Detection of Anomalous Noise Events for Real-Time Road-Traffic Noise Mapping: The Dynamap’s project case study

IF 1.7 Q2 ACOUSTICS
Francesc Alías, R. Alsina-Pagès, Ferran Orga, J. Socoró
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引用次数: 20

Abstract

Abstract Environmental noise is increasing year after year, especially in urban and suburban areas. Besides annoyance, environmental noise also causes harmful health effects on people. The Environmental Noise Directive 2002/49/EC (END) is the main instrument of the European Union to identify and combat noise pollution, followed by the CNOSSOS-EU methodological framework. In compliance with the END legislation, the European Member States are required to publish noise maps and action plans every five years. The emergence of Wireless Acoustic Sensor Networks (WASNs) have changed the paradigm to address the END regulatory requirements, allowing the dynamic ubiquitous measurement of environmental noise pollution. Following the END, the LIFE DYNAMAP project aims to develop a WASN-based low-cost noise mapping system to monitor the acoustic impact of road infrastructures in real time. Those acoustic events unrelated to regular traffic noise should be removed from the equivalent noise level calculations to avoid biasing the noise map generation. This work describes the different approaches developed within the DYNAMAP project to implement an Anomalous Noise Event Detector on the low-cost sensors of the network, considering both synthetic and real-life acoustic data.Moreover, the paper reflects on several open challenges, discussing how to tackle them for the future deployment of WASN-based noise monitoring systems in real-life operating conditions.
道路交通噪声实时映射中异常噪声事件的检测——Dynamap项目案例研究
摘要环境噪声逐年增加,特别是在城市和郊区。除了烦恼之外,环境噪音还会对人们的健康造成有害影响。环境噪声指令2002/49/EC(END)是欧盟识别和打击噪声污染的主要文书,其次是CNOSSOS-EU方法框架。根据END立法,欧洲成员国必须每五年公布一次噪音地图和行动计划。无线声学传感器网络(WASN)的出现改变了解决END监管要求的模式,允许对环境噪声污染进行动态无处不在的测量。在END之后,LIFE DYNAMAP项目旨在开发一种基于WASN的低成本噪声映射系统,以实时监测道路基础设施的声学影响。应该从等效噪声水平计算中去除那些与常规交通噪声无关的声学事件,以避免对噪声图生成产生偏差。这项工作描述了DYNAMAP项目中开发的不同方法,以在网络的低成本传感器上实现异常噪声事件检测器,同时考虑合成和真实声学数据。此外,本文还反思了几个悬而未决的挑战,讨论了如何应对这些挑战,以便在现实操作条件下部署基于WASN的噪声监测系统。
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来源期刊
Noise Mapping
Noise Mapping ACOUSTICS-
CiteScore
7.80
自引率
17.90%
发文量
5
审稿时长
12 weeks
期刊介绍: Ever since its inception, Noise Mapping has been offering fast and comprehensive peer-review, while featuring prominent researchers among its Advisory Board. As a result, the journal is set to acquire a growing reputation as the main publication in the field of noise mapping, thus leading to a significant Impact Factor. The journal aims to promote and disseminate knowledge on noise mapping through the publication of high quality peer-reviewed papers focusing on the following aspects: noise mapping and noise action plans: case studies; models and algorithms for source characterization and outdoor sound propagation: proposals, applications, comparisons, round robin tests; local, national and international policies and good practices for noise mapping, planning, management and control; evaluation of noise mitigation actions; evaluation of environmental noise exposure; actions and communications to increase public awareness of environmental noise issues; outdoor soundscape studies and mapping; classification, evaluation and preservation of quiet areas.
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