Archives of Acoustics, 40, 2, pp. 183–189, 2015
10.1515/aoa-2015-0020

Analysis of the Accuracy of Uncertainty Noise Measurement

Bartosz PRZYSUCHA
Lublin University of Technology
Poland

Wojciech BATKO
AGH University of Science and Technology in Krakow
Poland

Agata SZELĄG
Cracow University of Technology
Poland

The paper formulates some objections to the results of the evaluation of uncertainty in noise measurement which are presented in two standards: PN-ISO 9612 (2004) and DIN 45 641 (1990). In particular, it focuses on an approximation of the equivalent sound level by a function which depends on the arithmetic average of sound levels. Depending on the nature of a random sample the exact value of the equivalent sound level may be significantly different from the approximate one, which might influence on the erroneous estimation of the uncertainty of noise indicators. The article presents an analysis of this problem and the adequacy of the solution depending on the type of the random sample.
Keywords: acoustics; noise measurement; uncertainty in measurement; probability distribution.
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

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DOI: 10.1515/aoa-2015-0020