[ exact phrase in "" ]

[ including uploaded files ]


List all documents, ordered…

By Title

By Author

View PDF, DOC, PPT, and XLS files on line
Get weekly updates

when your community is targeted


RSS feeds and more

Keep Wind Watch online and independent!

Donate via Paypal

Donate via Stripe


Add NWW documents to your site (click here)

Low-frequency noise from large wind turbines – additional data and assessment of new Danish regulations 

Author:  | Noise

Previous studies have shown that the noise has more low-frequency content, when wind turbines get larger, and with todays’ megawatt turbines the low-frequency noise may cause annoyance for the neighbours. Therefore, low-frequency noise has been included in the noise regulations on wind turbines in Denmark. In this study, the data material has been increased to include more data on noise from modern production turbines up to 3.6 MW. In addition, the new Danish regulations are assessed. The previous result that the relative amount of low-frequency noise is higher for large turbines (> 2 MW) than for small turbines (≤ 2 MW) is confirmed. Due to the air absorption, the higher low-frequency content becomes even more pronounced, when sound pressure levels in relevant neighbour distances are considered. Even when A-weighted levels are considered, a substantial part of the noise is at low frequencies, and for several of the investigated large turbines, the one-third-octave band with the highest level is at or below 250 Hz. It is thus beyond any doubt that the low-frequency part of the spectrum plays an important role in the noise at the neighbours. The new Danish regulations are based on calculations of the indoor noise at the neighbours, but unfortunately, the calculation underestimates the level that would be measured, thus the regulation does not adequately prevent potential annoyance and sleep disturbance effects from future wind turbines in Denmark.

15th International Meeting on Low Frequency Noise and Vibration and Its Control, Stratford upon Avon, UK, 22nd–24th May 2012

Download original document: “Low-frequency noise from large wind turbines – additional data and assessment of new Danish regulations

This material is the work of the author(s) indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

The copyright of this material resides with the author(s). As part of its noncommercial educational effort to present the environmental, social, scientific, and economic issues of large-scale wind power development to a global audience seeking such information, National Wind Watch endeavors to observe “fair use” as provided for in section 107 of U.S. Copyright Law and similar “fair dealing” provisions of the copyright laws of other nations. Queries e-mail.

Wind Watch relies entirely
on User Funding
   Donate via Paypal
(via Paypal)
Donate via Stripe
(via Stripe)


e-mail X FB LI TG TG Share

Get the Facts
© National Wind Watch, Inc.
Use of copyrighted material adheres to Fair Use.
"Wind Watch" is a registered trademark.


Wind Watch on X Wind Watch on Facebook

Wind Watch on Linked In Wind Watch on Mastodon