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Audio and Visual Research

• AWEA Factsheet on Wind Turbines and Noise
  An explanation of how wind turbine noise is measured compared to other sources of noise. This factsheet also explains sound associated with wind farms and what manufacturers are doing to reduce turbine noise.

• Wind Turbine Audio and Video Clips
  Sample clips from Michael Klemen's Small Wind Research. Turbines sampled include Air 403, Bergey XL.1, AWP 3.6, Whisper 1000, Whisper H40, and WT2500.

• National Renewable Energy Laboratory Photographic Exchange
  Photo gallery of renewable energy graphics that can be used for presentations, graphics, or to see examples of various technologies.

• Sound level study: ARE110 Grid-tie
  November 2007 sound level study report from Beech Mountain.

• 2007 FAA Lighting Circular
  See Chapter 13. Marking and Lighting Wind Turbine Farms.

• Do wind turbines produce significant low frequency sound levels?
  G.P. van den Berg 2004

• Low Frequency Noise and Infrasound From Wind Turbine Generators: A Literature Review
  Bel Acoustic Consulting 2004

• Low Frequency Noise and Wind Turbines
  BWEA 2005

• Infrasound from Wind Turbines - Fact, Fiction or Deception
  Geoff Leventhall. Canadian Acoustics 2006.

• NREL Acoustic Test of Small Wind Turbines
  NREL Preprint 2004