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Title:
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Measurement of wind turbine noise immission with a two-microphone technique
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Author(s):
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Published by:
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Publication date:
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ECN
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1996
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ECN report number:
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Document type:
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ECN-C--96-074
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ECN publication
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Number of pages:
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Full text:
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32
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Download PDF
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Abstract:
The measurement of wind turbine noise at an immission point at a largedistance from the turbine is very often hindered by the high contribution of
the ambient noise and of the wind-induced noise in the microphone. The use of
a 2-microphone technique for the measurements could reduce the measured
contribution of the ambient noise and the wind-induced microphone noise
without the suppression of the measured wind turbine noise. The merits of
this technique were assessed experimentally, both in the time domain and in
the frequency domain. It is concluded that the measured contribution of the
ambient noise and wind-induced microphone noise is indeed reduced
significantly. However, also the measured contribution of the wind turbine
noise is reduced to a certain extent. For this reason the application of the
technique for wind turbine immission measurements is not recommended. 11
figs., 3 tabs., 2 refs.
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