Large-region dynamic tomographic mapping of environmental noise sources with microphone arrays

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

Research output: Contribution to conferencePaper

Abstract

Environmental noise has become a major problem in large urban cities, raising concerns on mental and physical human health. However, current noise-monitoring techniques may not capture the intermittent annoying variations in the acoustic field due to very loud nonstationary noise sources such as banging from construction sites or traffic noise from moving vehicles. We propose a dynamic tomographic imaging approach for large-region acoustic mapping of nonstationary noise sources using the far-field delay-and-sum beamforming output power of prepositioned microphone arrays as tomographic measurements. We formulate the dynamic tomographic image formation under the linear state-space model, in which we recursively estimate the unknown acoustic field via a Kalman filter given the measurements. Preliminary dynamic acoustic mapping experiments with two fixed eight-channel circular microphone arrays demonstrate that with this new tomographic approach, it becomes possible to effectively characterize individual nonstationary acoustic noise sources on 2-D consecutive frame-by-frame noise-maps, offering an alternative advanced environmental noise-monitoring solution.

Original languageEnglish (US)
Pages2838-2846
Number of pages9
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

Keywords

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

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • Cite this

    Tuna, C., Zhao, S., Nguyen, T. N. T., & Jones, D. L. (2016). Large-region dynamic tomographic mapping of environmental noise sources with microphone arrays. 2838-2846. Paper presented at 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016, Hamburg, Germany.