Uncertainty analysis in the assessment of long-term noise indicators

This study addresses the assessment conditions of long-term noise indicators based on
irregular noise monitoring data. Variations of $L_{\textrm{ DEN}}$ estimates (day – evening – night noise
indicator) on different days of the week were examined. Two hypotheses are verified: that
mean estimates shall be identical on all days of the week and that variances of thus obtained
estimates are homogeneous. The data for statistical analyses were noise levels recorded in one
year by an on-line noise monitoring system in Kraków.