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Research into the improvement of the management of helicopter noise

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Figure

Table 1: Defra Technical Working Group - Helicopter noise
Table 2: Helicopter noise complaints received 2005-2007 (survey of EnvironmentalHealth departments) [8].
Figure 1: Simulated time history (SPL) of sporadic helicopter flyovers comparedwith 16hr Leq.
Figure 2: Breakdown of Police helicopter types[18]
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