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Meldingen over en hinder van Laagfrequent Geluid of het horen van een bromtoon in Nederland: inventarisatie.

Kamp, I. van, Breugelmans, O.R.P., Poll, H.F.P.M. van, Baliatsas, C., Kempen, E.E.M.M. van. Meldingen over en hinder van Laagfrequent Geluid of het horen van een bromtoon in Nederland: inventarisatie. Bilthoven: Rijksinstituut voor Volksgezondheid en Milieu, 2018. 32 p.
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In recent years, there has been an increasing focus on low-frequency sound and hearing a bothersome humming noise as well as the potential health effects associated with such sounds. One of the first reactions to this kind of sound is that it is felt to be annoying, and this is often accompanied by secondary effects such as headaches, difficulties in concentrating, heart palpitations, and difficulties sleeping. Annoyance and sleep disturbance are proven effects of low-frequency sound. The number of complaints that are attributed to exposure to low-frequency sound as well as the level of concern in that regard seems to be on the rise, not only in the Netherlands but also elsewhere.
However, it is not possible to determine exactly how many people are bothered by low-frequency sound, among other things because no systematic research has been carried out in that regard. In many cases, it is not possible to clearly identify a source of low-frequency sound and to determine its effect on human well-being and health. In addition, people sometimes think they are bothered by this type of sound whereas that is not always not the source. Large differences also seem to exist with regard to the degree of annoyance experienced between different cities, regions, and localities.
Low-frequency sounds occur quite frequently in day-to-day life and are produced by natural sources as waves and the wind, as well as by human activities such as industrial installations, domestic appliances, and road traffic. Noise-insulating measures aimed at combating louder sounds, such as ‘quiet road surface’ and noise barriers, also result in low-frequency sounds being heard more often.
According to provisional estimates, approximately 2% of the Dutch population 18 years and older suffers high annoyance due to low-frequency sound. RIVM recommends carrying out a more systematic investigation of this issue with regard to potential sources such as road traffic, ventilation and cooling systems, and heat pumps. Due to the large differences between different localities and regions, this would have to be carried out in a standardised manner and at least at the level of specific localities or neighbourhoods. It is possible that the incidence of low-frequency sound increases as a result of future developments. One such development could be an increasing use of mechanical ventilation, heat pumps and cooling systems as a result of climate change and the energy transition. RIVM therefore recommends keeping a close watch on such developments.