N2 - The problem of estimation of the long-term environmental noise hazard indicators and their uncertainty is presented in the present paper. The type A standard uncertainty is defined by the standard deviation of the mean. The rules given in the ISO/IEC Guide 98 are used in the calculations. It is usually determined by means of the classic variance estimators, under the following assumptions: the normality of measurements results, adequate sample size, lack of correlation between elements of the sample and observation equivalence. However, such assumptions in relation to the acoustic measurements are rather questionable. This is the reason why the authors indicated the necessity of implementation of non-classical statistical solutions. An estimation idea of seeking density function of long-term noise indicators distribution by the kernel density estimation, bootstrap method and Bayesian inference have been formulated. These methods do not generate limitations for form and properties of analyzed statistics. The theoretical basis of the proposed methods is presented in this paper as well as an example of calculation process of expected value and variance of long-term noise indicators LDEN and LN. The illustration of indicated solutions and their usefulness analysis were constant due to monitoring results of traffic noise recorded in Cracow, Poland.
L1 - http://journals.pan.pl/Content/101427/PDF/04_paper.pdf
L2 - http://journals.pan.pl/Content/101427
PY - 2014
IS - No 1
EP - 36
DO - 10.2478/aoa-2014-0004
KW - long-term noise indicators
KW - uncertainty
KW - kernel density estimation
KW - bootstrap
KW - Bayesian inference
KW - non-classical statistics
A1 - Batko, Wojciech Michał
A1 - Stępień, Bartłomiej
PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics
VL - vol. 39
T1 - Type a Standard Uncertainty of Long-Term Noise Indicators
DA - 2014
SP - 25
UR - http://journals.pan.pl/dlibra/publication/edition/101427
T2 - Archives of Acoustics