An acoustical model based monitoring network
conference paper
In this paper the approach for an acoustical model based monitoring network is demonstrated. This network is capable of reconstructing a noise map, based on the combination of measured sound levels and an acoustic model of the area. By pre-calculating the sound attenuation within the network the noise map can be shown in real-time. The monitoring network offers an analysis tool for instance for industry or legal authorities. Alternatively, it can be an extension to the EU legislated noise maps. In principle the monitoring network works as follows. Battery powered microphones are deployed in an outdoor area. SPL's are measured in octave bands. Wireless communication and multi-hopping is used to collect the data at a central station. The SPL values are used to localize non-directional point sources, while accounting for obstacles and meteorological effects in the sound attenuation. The final result is a list of reconstructed sources with their locations and strengths and a noise contour map. The monitoring network is scalable and seems feasible and useful for large areas.
Topics
AcousticsMonitoringNetworkOutdoorReal-timeAcoustic modelAcoustical modelAnalysis toolsBattery poweredCentral stationsMeteorological effectsMonitoring networkMulti-hoppingNoise contoursNoise mapOctave bandsOutdoorPoint sourcesReal-timeSound attenuationSound levelWireless communicationsAcousticsMonitoringNetworks (circuits)Noise pollutionWireless telecommunication systemsAcoustic noise
TNO Identifier
466469
ISBN
9781617823961
Publisher
The Institute of Noise Control Engineering of the USA
Source title
39th International Congress on Noise Control Engineering 2010, INTER-NOISE 2010, 13 June 2010 through 16 June 2010, Lisbon, Portugal
Place of publication
Washington,DC
Pages
1782-1789
Files
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