Abstract
Subjective assessments made by test persons were compared to results
from a number of objective measurement and calculation methods for
the assessment of low frequency noise. Eighteen young persons with
normal hearing listened to eight environmental low frequency noises
and evaluated the annoyance of the noises. The noises were stationary
noise with and without tones, intermittent noise, music, traffic
noise and impulsive low frequency noise. The noises were presented
twice in a random order at L-Aeq levels of 20 dB, 27.5 dB and 35
dB. The assessment methods were those used in Sweden, Germany, The
Netherlands, Poland and Denmark. It was found that the Danish assessment
method gave the best relation to the subjective assessments made
by the test persons. An important property of this method is that
it includes a 5 dB penalty for noises having an impulsive character.
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