Besides large-scale field studies, the impact of noise on sleep
has been intensively investigated in laboratory settings. Indeed,
in a well-controlled environment, precise dose–response relationships
can be investigated. One of the main challenges of laboratory
studies however is the extrapolation of findings into everyday life
[22]. Therefore, research in the home environment studying the
direct relationships between noise and sleep bridges between the
findings of laboratory and large-scale field studies. Having precise
noise levels during the exact period of sleep will provide the most
solid base to draw conclusions on the degree to which nocturnal
noise will be responsible for sleep interferences. As it was expected
that for the inside noise levels, periods within the 11 PM–07 AM