Below are defined some terms or acronyms used in this documentation:
- LAeq : A-weighted Leq sound level.
- Lday : LAeq during the day (6h-18h)
- Lden : LAeq over a whole day (day-evening-night)
- Leq : equivalent continuous sound level (in dB) having the same total sound energy as the fluctuating level measured
- Levening : LAeq during the evening (18h-22h)
- Lnight : LAeq during the night (22h-6h)