The Inversion Method in Measuring Noise Emitted by Machines in Opencast Mines of Rock Material |
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| Authors: | Dariusz Pleban Janusz Piechowicz Krzysztof Kosa?a |
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| Institution: | 1. Central Institute for Labour Protection – National Research Institute (CIOP-PIB), Poland;2. AGH University of Science and Technology, Kraków, Poland;3. Central Institute for Labour Protection – National Research Institute (CIOP-PIB), Poland AGH University of Science and Technology, Kraków, Poland |
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| Abstract: | The inversion method was used to test vibroacoustic processes in large-size machines used in opencast mines of rock material. When this method is used, the tested machine is replaced with a set of substitute sources, whose acoustic parameters are determined on the basis of sound pressure levels and phase shift angles of acoustic signals, measured with an array of 24 microphones. This article presents test results of a combine unit comprising a crusher and a vibrating sieve, for which an acoustic model of 7 substitute sources was developed with the inversion method. |
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| Keywords: | noise machines opencast mines inversion method substitute sources |
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