The LAeq outside noise levels in condition T.2307 were reduced
with the WHO proposed average of 21.3 dB(A) for single-glazed
and 22.2 dB(A) for double-glazed windows. These estimated indoor
noise values were compared with the actually measured
LAeq(23-07,indoor) using a Friedman ANOVA. No statistically significant
difference was found in the comparison of the estimated
and actually measured indoor noise levels