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Lnight, the A-weighted, Leq (equivalent noise level) over the 8 hour night period of 23:00 to 07:00 hours, also known as the night noise indicator. See also Lday • Lden • Levening.

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2018年1月1日 · This article presents empirically derived conversion rules between the environmental noise exposure metrics Leq24 h, LDay, LEvening, LNight, Ldn, and Lden for the noise sources road, rail and air traffic. It caters to researchers that need to estimate the value of one (unknown) noise metric from the value of another (known) metric, e.g. in the ...

2009年10月15日 · In December 2006, the working group and stakeholders from industry, government and nongovernmental organizations reviewed and reached general agreement on the guideline values and key texts for the final document of the Night noise guidelines for Europe.

The day–evening–night noise level or Lden is a 2002 European standard to express noise level over an entire day.

This article presents empirically derived conversion rules between the environmental noise exposure metrics Leq24h, LDay, LEvening, LNight, Ldn, and Lden for the noise sources road, rail and air traffic.

Lday (Ld), Lnight (Ln) and Ldn values were computed using corresponding hourly Leq. In some cases, in addition to Lden and Lnight , and where appropriate Lday and Levening, it may be advantageous to use special noise indicators and related limit values.

2022年12月5日 · There are slight variations per nation, the most frequent is that “street” is replaced by “outside”. The Lden and Lnight indicators are chosen because relationships with adverse health effects have been well established and because a EU-wide dataset is available.