Identification of noise sources using a time domain beamforming on pneumatic, gas and electric nail guns


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Padois, T., Gaudreau, M.-A., Marcotte, P. et Laville, F. (2019). Identification of noise sources using a time domain beamforming on pneumatic, gas and electric nail guns. Noise Control Engineering Journal, 67 (1). p. 11-22. ISSN 0736-2501 DOI 10.3397/1/37672

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In the construction industry, many workers are exposed daily to harmful levels of impulsive noise from nail guns. Therefore, a better knowledge of the noise generated by these tools is required in order to propose noise reduction solutions. The objective of this work is to propose an approach for source identification using a microphone array together with a source identification algorithm based on recent development in the generalized cross-correlation technique. In addition to the pneumatic nail gun, for which sources have been partially identified in the literature, the proposed approach is applied to two other types of nail guns, an electric and a gas powered one. First, the standardized acoustic power spectrum of these three nail guns is measured for global comparison purposes and result in a ranking of the three nail guns. Second, the generalized cross-correlation technique applied to nail gun noise source identification is presented. Third, acoustic maps for successive small time segments are presented, providing a fine identification of noise sources for the three nail guns and an explanation of the observed sound power level ranking. © 2019 Institute of Noise Control Engineering.

Type de document: Article
Mots-clés libres: Beamforming Construction industry Correlation methods Impulse noise Noise abatement Pneumatics Time domain analysis Acoustic maps Acoustic power Generalized cross correlations Microphone arrays Noise source identification Sound power levels Source identification Time-domain beamforming Acoustic noise
Date de dépôt: 02 mars 2022 21:52
Dernière modification: 03 mars 2022 18:25
Version du document déposé: Version officielle de l'éditeur
URI: https://depot-e.uqtr.ca/id/eprint/9973

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