Resource Documents by World Health Organization
World Health Organization
Environmental Noise Guidelines for the European Region
Wind Turbine Noise Recommendations For average noise exposure, the GDG [Guideline Development Group] conditionally recommends reducing noise levels produced by wind turbines to below 45 dB[A] Lden* [at the most exposed façade, outdoors], as wind turbine noise above this level is associated with adverse health effects. To reduce health effects, the GDG conditionally recommends that policy-makers implement suitable measures to reduce noise exposure from wind turbines in the population exposed to levels above the guideline values for average noise exposure. No evidence . . . Complete article »
World Health Organization
Night Noise Guidelines for Europe
Abstract: Considering the scientific evidence on the thresholds of night noise exposure indicated by Lnight,outside as defined in the Environmental Noise Directive (2002/49/EC), an Lnight,outside of 40 dB should be the target of the night noise guideline (NNG) to protect the public, including the most vulnerable groups such as children, the chronically ill and the elderly. Lnight,outside value of 55 dB is recommended as an interim target for the countries where the NNG cannot be achieved in the short term . . . Complete article »
World Health Organization
Guidelines for Community Noise
“… for clear speech perception the background noise level should not exceed 35 dB(A). … “Measurable effects of noise on sleep begin at LAeq levels of about 30 dB. … When noise is continuous, the equivalent sound pressure level should not exceed 30 dB(A) indoors, if negative effects on sleep are to be avoided. For noise with a large proportion of low-frequency sound a still lower guideline value is recommended. … “During daytime, few people are highly annoyed at LAeq levels below 55 . . . Complete article »
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