Date: Tuesday, May 21, 2013
Speaker: Bruce
Walker, Ph.D., Channel Islands Acoustics,
Topic: Assessing
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
Place: Arup
FROM
LAX
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Take
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Turn
LEFT onto
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Turn
RIGHT onto
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Turn
LEFT into Arup, ½ Block past McConnell Ave
FROM
DOWNTOWN
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Take
I10 (Santa Monica Freeway) WEST
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Take
I405 (
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Take
the
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Turn
RIGHT onto
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Turn
RIGHT into Arup, 1 Block past Westlawn Ave