FAQs

Noise & Health

Good for Farmers?

WHAT TO DO
when your community is targeted

FAQs

Publications & Products
(Fact sheets, flyers, buttons, and more)

Photos & Graphics

Videos

Research Links

Selected Documents

Press Releases

Alerts & Events

Store

Sign up for daily updates
RSS

RSS Feeds and more

Keep Wind Watch online and independent!

add NWW to your search bar ]

Wind turbine sound – field recording

(Denmark; 10 min.)

A 10 minutes field recording of a wind turbine, 850kW, total height 80 meters. Some flag pole noise to the right.

Download MP4 (57.4 MB)

This post describes a field sound recording of a wind turbine, 29-4-2012. There are MANY in Denmark, but only few in the Copenhagen region for some reason. The noise, especially the very deep and far reaching rumbling sound is currently heavily debated. It appears to be a challenge to really get hold of how those wind turbines actually sound and the precise characteristics will always depend on types and sizes of wind turbines. It is a bit complicated.

Using my usual dummy head recording setup, with QTC40’s, pressure equalizers and an extra layer of wind protection, I have tried to make a clean and realistic recording of a wind turbine.

Listen to a short sound sample (WAV) of the wind turbine noise at low and higher wind speeds:

This short clip summarizes the wind turbine noise at low and higher wind speeds. Here in uncompressed wav format to preserve the full original quality and full as-recorded low frequency contents.

The recordings were made at a local wind turbine, a relatively new 80 meters high, 850 kW, Vestas V52 turbine. It was an early Sunday morning, 8 am, to minimize the noise from a nearby motorway. It felt kind of windy, estimated 5-6 m/s, but fluctuating. The sound from the wind turbine varied a lot according to the wind speed and the position/distance. Directly underneath it was surprisingly silent. But at a distance of 50 meters in front of the tower there was a spot where the noise appeared most clear and direct, so this was chosen for the recordings.

The video above is a 10 minutes take. Notice how the fluctuating wind alters the rotation speed and the sound level. In the video and mp3 version, a bass roll off has been applied to reduce the deep rumble and to make the sound more “realistic” in headphones.

Looking more into the technical details, the sound appears to be composed of a very deep rumble, some semi-deep gear sounds, and higher pitch turbulent noises from the fast rotor blades. As the specs of the Earthworks, QTC40’s microphones says +/− 1 dB from 4Hz to 40 kHz, I was hoping to pickup the full audio spectrum from the turbine, maybe even deep infra-sounds. A major challenge here, was the wind which has a habit of generating plenty of similar deep rumbling. To reduce this problem, I was applied a double layer of nylon stocking material as wind protection and often manually shielding the setup with my jacket. I wonder how the official noise measurements are carried out overcoming the task of recording very low frequencies at high wind speeds.


[Wind turbine noise spectral view. Top part represents low winds (~4m/s) and bottom part at higher winds (~7m/s).]

Taking a closer look at the results, the figures up and below give a comparison of the frequency spectrum, when comparing the sequences with lowest and highest wind speed, estimated 4 and 7 m/s. This gives an unscientific indication of the direct contribution from the wind turbine to the overall noise in competition to the motorway and other wind noises. Apparently, increasing the wind speed gives an amplification of about 6-10dB right evenly over the range 10-10000 Hz. The low-frequency content is substantial. Of course, this is would hardly be visible in conventional A-weighted noise estimates.


[Wind turbine noise spectra. Green is low winds (~4m/s) and red high winds (~7m/s)]


Welcome to Mars Hill

(Maine; 22 min.)

Voices of Tug Hill

(Lewis Co., N.Y.; 21 min.)

Life Under a Windplant

(Meyersdale, Pa.; 26 min.)

Wind Turbine Strobe Lights and Eerie Noises

(Fenner and Wethersfield, N.Y.; 7 min.)

Industrial Wind Energy Information

(compilation from above videos and the "Truth About Industrial Wind Energy" presentations; 39 min.)

The Wind Turbine Battle / Der Kampf um die Windräder

(Germany; 29 min.)

Get Out While You Can! Big Wind Is Coming

(Chautauqua, N.Y.; 32 min.)

Wind Farm Issues — Compilation

(Fife, Scotland; 6 min.)

BRIGHT GREEN LIES

(1 hr. 11 min.)

PLANET OF THE HUMANS

(1 hr. 40 min.)

WINDFALL

(Meredith, N.Y.; 1 hr. 23 min.)

WIND RUSH

(Ontario; 42 min.)

WINDBAG OF AEOLUS [Ασκός του Αιόλου]

(Greece; 1 hr. 23 min.)

Health Impacts of Industrial Wind – conference, Erie Co., New York

(6 videos)

Nextera Zoning Hearings, Clinton Co., Missouri

(9 topics; 515 videos)

La nueva conquista: Eolicos en Oaxaca

(Mexico; 10 min.)

Infrasound & Low Frequency Noise: Physics, Cells, Health and History

(Waterloo, Ont.; 2 hr. 22 min.)

Infrasound Caused by Wind Turbines / Infraschall – Unerhörter Lärm

(Germany; 28 min.)

Infrasound from Wind Turbines / Infraschall von Windkraftanlagen / Infrasons des éoliennes

(Germany; 10 min.)

Wind Turbine Syndrome, a matter of bad prevention?

(Denmark; 13 min.)

Wind Turbines and Public Health

(Australia; 7 min.)

No Safe Place

(Prince Edward Co., Ont.; 13 min.)

Arkwright, New York

(5 videos)

Presentations before the Concerned Citizens of Moore and Argyle Township

(Michigan; 3 videos)

The Falmouth Conference on Human Rights

(Falmouth, Mass.; 5 videos)

Wind Turbine Information Session

(Scituate, Mass.; 2 hr. 10 min.)

Potential Placement of Wind Turbines

(Shelburne, Mass.; 1 hr. 57 min.)

Realities of Wind Energy

(Dekalb Co., Ill.; 1 hr. 20 min.)

Battery Blues

(Hawaii; 4.5 min.)

This Is Green Energy?

(Lowell, Vt.; 1.5 min.)

Mad World of Wind Turbines

(3.5 min.)

Wind Turbine Construction: Compilation

(6 min.)

Wind Turbine Construction

(4 videos)

Concrete Pour: Wind Turbine Foundation

(Ireland; 5 min.)

Europe’s Ill Wind

(25 min.)

A Taste of What’s Planned

(Whitelee, Scotland; 3 min.)

Testimony: Wind Turbine Noise

(Vermont; 19 videos)

Ontario Wind Turbines

(6 min.)

Living Near a Windfarm: Cape Bridgewater, Victoria

(4 interviews)

Victim Impact Statements: Australia

(13 interviews)

Interviews with Wisconsin Wind Farm Residents

(5 interviews)

Wisconsin Wind

(Fond du Lac Co. and Lincoln Township; 1 hr. 49 min.)

Throwing Caution to the Wind

(Port Rowan, Ont.; 7.5 min.)

Throwing Caution to the Wind

(Barrington, R.I.; 17 min.)

Helen Fraser Interview

(Shelburne, Ont.; 21 min.)

Amaranth Wind Turbines, Noise and Health: Barbara Ashbee Interview

(Amaranth, Ont.; 17 min.)

Pandora’s Pinwheels: The Reality of Life with Wind Turbines

(Australia and New Zealand; 1 hr. 57 min.)

Wind Turbines: The Test of Time

(7 min.)

Damage to farm fields and drainage tiles

(Iowa; 2 videos)

Shadow Flicker

(Webster Co., Neb.; 9 videos)

Shadow Flicker in Kingston, Massachusetts

(4 videos)

Shadow Flicker

(Dashwood, Huron Co., Ont.; 2 min.)

Wind Turbine Sound – Field Recording

(Denmark; 10 min.)

What Wind Turbines Sound Like

(Fond du Lac Co., Wis.; 2.5 min.)

Wind Turbine Noise and Shadow Flicker

(Fond du Lac Co., Wis.; 9 min.)

Industrial Wind Turbine Shadow Flicker in Wisconsin 2008

(Fond du Lac Co., Wis.; 2.5 min.)

Wind Turbine Flicker

(Scituate, Mass.; 7 videos)

Shadow Flicker and Noise

(Freedom, Maine; 3 videos)

Shadow Flicker

(The Netherlands; 3 min.)

Foliennes — Éoliennes à tout prix?

(Québec; 7 videos)

The Truth About Industrial Wind Energy

(Kansas; 12 presentations)

Infrasound and Motion Sickness

(Ontario; 18 min.)

Lowell Mountain Soundscape Before and After Wind Turbines

(Vermont; 30 sec.)

Noise of Turbine in Aberdeenshire

(Scotland; 2 min.)

Sound Recording

(Wales)

Wind Turbine Breaks Up in Storm

(Denmark; 3 videos)

Wind Turbine Fire — Burning Blades Fly Off

(Portugal; 1 min.)

Burning Wind Turbine

(Portugal; 4.5 min.)

Burning Wind Turbine

(Indiana; 2 min.)

Wind Turbine Fire

(Isselburg, Germany; 2 videos)

Wind Turbine Fires

(Germany)

Washing Wind Turbine from Helicopter

(Spain; 3 min.)

The Battle for Cefn Croes

(Wales; 3 min.)

The Destruction of Cefn Croes

(photo collection)

Vulture Fatally Collides With Wind Turbine Blade

(Crete; 30 sec./6 min.)

A Rough Wind: The Impact of Industrial Windmill Facilities on Birds and Other Wildlife

(Pennsylvania; 20 min.)

Raptors and Wind Turbines

(Norway; 6.5 min.)


More videos are available in the Documents Library.

Also see more videos at the National Wind Watch You Tube page


NWW also recommends:

The Politics of Peat

RTE News footage of the bog slides caused by wind facility construction in Derrybrien and other sites in Co. Galway, Ireland
(compiled by the Scottish Wind Assessment Project)
Write to SWAP to obtain a copy.

Get the Facts Follow Wind Watch on Twitter

Wind Watch on Facebook

Share

CONTACT DONATE PRIVACY ABOUT SEARCH
© National Wind Watch, Inc.
Use of copyrighted material adheres to Fair Use.
"Wind Watch" is a registered trademark.
Share

 Follow: