4.3.3. Inside noise events exceeding outside noise events
Fig. 1 represents the average number of epochs (30 s) per night
in which indoor noise events were above 45 dB(A) and exceeded
the outdoor noise levels. This offers some insight into the proportion
of times in which noise events inside could not be primarily
explained by outside sources of noise. Large inter- and intraindividual
differences were noticed in both timeframes, together
with a high percentage of nights in which this specific type of
inside noise event was absent (38% for T.2307; 46% for T.TIB). For
inside noise levels not exceeding the outside noise levels, no clear
conclusion can be drawn towards the degree that this results from
outside versus inside sources of noise.