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Use of Acoustic Camera for Noise Sources Localization and Noise Reduction in the Industrial Plant

Fiebig Wiesław, Dąbrowski Damian

Archives of Acoustics

2020

Vol. 45, No. 1

111--117

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.

Localization of noise sources in electric cookers based on sound pressure and intensity measurements

Jakubek Bartosz, Barczewski Roman, Tabaszewski Maciej

Vibrations in Physical Systems

2019

Vol. 30, nr 2

art. no. 2019223

The main aim of the study was to compare the features of acoustic maps created on the basis of measurements of sound pressure and intensity in a near acoustic field. Data for comparisons were obtained within the framework of acoustic tests of electric cookers. The results of these studies may help in the selection of acoustic mapping and optimization methods according to individual needs and/or requirements concerning selectivity, measurement bandwidth, dynamics and the ability to locate sound-emitting areas. The paper also presents the results of the spectral analysis of the dominant sources of noise in the cooker, which was helpful in identifying and locating paths of noise propagation from the inside of the cooker.