Date: Tuesday, May 21, 2013
Walker, Ph.D., Channel Islands Acoustics,
the Inaudible Components of Wind Turbine Noise
Recent Investigations of Infrasound Emission and Immission
Infrasound radiation from large wind turbines has received significant attention over the past two to three years, and Wind Turbine Syndrome, a malady similar to seasickness, has become a hot topic of debate. The notion that inaudible components of wind turbine acoustical emissions could cause adverse physical reactions in some people is not totally discountable, but because of ubiquitous low frequency pressure fluctuations in the atmosphere, documenting the properties of wind turbine infrasound that might "break through" the atmospheric fluctuations and cause discomfort is somewhat difficult. At the meeting, some test methods and results will be shown for evaluating wind turbine emissions and for measurement of turbine noise within exposed residences. Synthesized wind turbine infrasound examples will be demonstrated and audience reactions sought.
Bruce Walker received BS and MS degrees in Physics from UCLA in 1969 and 1971, working as research assistant to Vern Knudsen and Leo Delsasso. Following three years in architectural acoustics consulting with Goodfriend & Associates and Purcell + Noppe + Associates, he returned to UCLA and received his PhD in acoustical engineering in 1981, working with William Meacham and Andrew Charwat. He has been studying wind turbine noise since the mid 1980's.
Time: 7:00-7:30 pm Coffee and Refreshments
7:30-8:30 pm Meeting
8:30-9:00 pm Coffee and Discussion
· Turn LEFT into Arup, ½ Block past McConnell Ave
· Take I10 (Santa Monica Freeway) WEST
· Turn RIGHT into Arup, 1 Block past Westlawn Ave