Assessing Community Annoyance of Helicopter Noise (2017) / Chapter Skim
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Pages 132-133
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From page 132... ...
132 The noise monitoring for this study was performed using four identical systems of two sound level meters (SLMs)
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From page 133... ...
Noise Measurement Protocol 133 was checked and recorded using the B&K 4231 calibrator. The SLMs were recalibrated if the measured level differed from the calibration level by more than 0.4 dB.
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