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[1] and it is primarily used for noise assessments of airports, busy main roads, main railway lines and in cities over 100,000 residents.[2][3][4] 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.
^Malcolm J. Crocker (5 October 2007). Handbook of Noise and Vibration Control. John Wiley & Sons. p. 15. ISBN978-0-471-39599-7.
^"Gesundheitsrisiken durch Umgebungslärm" [Health risks from environmental noise]. Umweltbundesamt. 2 June 2020.
^Daniel R. Raichel (4 January 2006). The Science and Applications of Acoustics. Springer Science & Business Media. p. 331. ISBN978-0-387-26062-4.
^Norman J. Ashford; Saleh Mumayiz; Paul H. Wright (6 April 2011). Airport Engineering: Planning, Design, and Development of 21st Century Airports. John Wiley & Sons. p. 724. ISBN978-1-118-00547-7.
evening, night, noise, level, evening, night, noise, level, lden, 2002, european, standard, express, noise, level, over, entire, imposes, penalty, sound, levels, during, evening, night, primarily, used, noise, assessments, airports, busy, main, roads, main, ra. 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 1 and it is primarily used for noise assessments of airports busy main roads main railway lines and in cities over 100 000 residents 2 3 4 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 Definition editLden is calculated as 5 L d e n 10 l o g 10 1 24 12 10 L d a y 10 4 10 L e v e n i n g 5 10 8 10 L n i g h t 10 10 displaystyle L den 10 cdot log 10 left frac 1 24 left 12 cdot 10 frac L day 10 4 cdot 10 frac L evening 5 10 8 cdot 10 frac L night 10 10 right right nbsp Where the long term average noise levels are defined as Part of the day hours penalty dB day 07 00 19 00 0evening 19 00 23 00 5night 23 00 07 00 10The exact hours of the three periods may be chosen differently by individual EU member states The formula for Lden can be considered a weighted average of the yearly individual noise level during day evening and night See also editEnvironmental noise directive Day night average sound level the US equivalentReferences edit Malcolm J Crocker 5 October 2007 Handbook of Noise and Vibration Control John Wiley amp Sons p 15 ISBN 978 0 471 39599 7 Gesundheitsrisiken durch Umgebungslarm Health risks from environmental noise Umweltbundesamt 2 June 2020 Daniel R Raichel 4 January 2006 The Science and Applications of Acoustics Springer Science amp Business Media p 331 ISBN 978 0 387 26062 4 Norman J Ashford Saleh Mumayiz Paul H Wright 6 April 2011 Airport Engineering Planning Design and Development of 21st Century Airports John Wiley amp Sons p 724 ISBN 978 1 118 00547 7 Directive 2002 49 EC Act of 25 June 2002 nbsp nbsp This article relating to European Union law is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Day evening night noise level amp oldid 1125259452, wikipedia, wiki, book, books, library,
