Abstrakt
The main aim of this paper is to present recent knowledge about the
assessment and evaluation of low frequency noise and infrasound close to
the threshold of hearing and the potential effects on human health. Low
frequency noise generated by air flowing over a moving car with the open
window is chosen as a source of noise. The noise within the interior of
the car and its effects on a driver’s comfort at different velocities is
analyzed. An open window at high velocity behaves as a source of
specifically strong tonal low frequency noise which is annoying. The
interior noise of a passenger car was measured under different conditions;
while driving on normal highway and roadways. First, an octave-band
analysis was used to assess the noise level and its impact on the driver’s
comfort. Second, a Fast Fourier Transform (FFT) analysis was used for the
detection of tonal low frequency noise. Finally, the paper suggests
possibilities for scientifically assessing and evaluating low frequency
noise but not only for the presented source of the sound.
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