Drive-by multi-frequency large-region noise-source mapping via tomographic imaging

Cagdas Tuna, Shengkui Zhao, Thi Ngoc Tho Nguyen, Douglas L. Jones

Research output: Contribution to conferencePaper

Abstract

Recent studies indicate that noise pollution has hazardous impacts on human health and behavior, particularly becoming a serious problem in densely-populated cities. In order to effectively assess the environmental noise problem on a city-wide scale, there is a great need for a new low-cost environmental noise-monitoring system, which will replace conventional sound-pressure-level (SPL) meter-based techniques that require overly expensive microphone deployment at a dense grid of locations. In this paper, we propose an advanced cost-effective large-region environmental noise mapping scheme that uses a microphone array mounted on a vehicle driving around the city to make detailed acoustic noise maps without the need for point-by-point measurements. We demonstrate that the multi-frequency SPLs and locations of sparsely-distributed localized noise-sources in the neighborhood traversed by the vehicle are jointly estimated via tomography, in which the far-field delay-and-sum beamforming output power values computed at multiple locations and different times as the vehicle drives past are used for tomographic imaging. The preliminary drive-by noise-source mapping experiments with two concentric circular arrays rooftop-mounted on an electric vehicle show the promise of this new proposed technique for cost-effective city-wide large-scale environmental noise monitoring.

Original languageEnglish (US)
Pages2832-2837
Number of pages6
StatePublished - Aug 21 2016
Event45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 - Hamburg, Germany
Duration: Aug 21 2016Aug 24 2016

Other

Other45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016
CountryGermany
CityHamburg
Period8/21/168/24/16

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Keywords

  • Acoustic imaging
  • Microphone-array processing
  • Noise-mapping

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Tuna, C., Zhao, S., Nguyen, T. N. T., & Jones, D. L. (2016). Drive-by multi-frequency large-region noise-source mapping via tomographic imaging. 2832-2837. Paper presented at 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016, Hamburg, Germany.