Use of Acoustic Camera for Noise Sources Localization and Noise Reduction in the Industrial Plant
Abstract
The paper presents results of the localization of main noise sources in the industrial plant. Identification of main noise sources was made with an acoustic camera using Beamforming Method. Parallel to the measurements by means of the acoustic camera, sound level measurements on the main noise sources have been performed. Based on the calculations, prediction regarding the noise emission at residential buildings located near to the plant has been determined. Acoustic noise maps have been performed with LEQ Professional software, which includes the 3D geometry of the buildings inside the plant. It has been established that, after introduction of noise reduction measures in the plant, the noise levels at the observation points in the residential area meets the limit values.Keywords:
noise source localization, noise reduction, industrial noise control, acoustic cameraReferences
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2. Bradstein M., Ward D. (2001), Microphone arrays. Signal processing techniques, Springer-Verlag.
3. Christensen J.J., Hald J. (2004), Beamforming, Brüel & Kjær Technical Review, No. 1 –2004, Brüel & Kjær Sound & Vibration Measurement A/S, Nærum, Denmark.
4. Fiebig W., Dąbrowski D. (2014) The noise sources identification and noise reduction in the industrial plant, Proceedings of 7th Forum Acusticum 2014, Krakow, September, 7–12, 2014.
5. Kaneda Y., Ohga J. (1986), Adaptive microphone-array system for noise reduction, IEEE Transaction on Acoustics, Speech and Signal Processing, 34(6): 1391–1400, https://doi.org/10.1109/TASSP.1986.1164975.
6. Kim Y.-H., Choi J.-W. (2013), Sound visualization and manipulation: theory, implementation, and application, Wiley, 2013.
7. Le Bouquin R., Faucon G. (1992), Using the coherence function for noise reduction, IEE Proceedings I – Communications, Speech and Vision, 139(3): 276–280, https://doi.org/10.1049/ip-i-2.1992.0038.
8. McCowan I.A. (2001), Microphone arrays. A tutorial, https://www.researchgate.net/publication/255660912_Microphone_Arrays_A_Tutorial.
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10. Santos L.C., Matias Ch., Vieira F., Valado F. (2008) Noise mapping of industrial sources, Acústica 2008, October 20–22, 2008, Coimbra, Portugal, art. ID. 249.
