Definition of Day–evening–night noise level
The day–evening–night noise level or Lden is a 2002 European standard to express noise level over an entire day. It imposes a penalty on sound levels during evening and night and it is primarily used for noise assessments of airports, busy main roads, main railway lines and in cities over 100,000 residents. The penalty for sound production during evenings and nights is due to higher nuisance perception during quieter hours and to prevent sleep deprivation for nearby residents.
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Frequently asked questions
What is Day–evening–night noise level?
The day–evening–night noise level or Lden is a 2002 European standard to express noise level over an entire day. It imposes a penalty on sound levels during evening and night and it is primarily used for noise assessments of airports, busy main roads, main…
Sources & credits
- Wikipedia: Day–evening–night noise level – CC BY-SA 4.0
- Image by Eric Gaba – CC BY-SA 3.0