Publikacje

Abstract:

The paper presents the analysis results of vehicle
traffic measurements which were used to simulate the noise
measurands. The Cnossos-EU model were used for this purpose.
The traffic flow was measured over the period between January
and December 2013. The measurements were documented at
one hour intervals throughout the entire 24 hours of the day
(1:00-24:00). The results of noise simulations were compared
with the equivalent sound level calculated by permanent
automatic sound and traffic volume monitoring station. The
frequency noise analysis was calculated according to the
Cnossos-EU model. The results was described using parameters
such as the median C 50 , average peak level C 90 , average
background noise level C 10 , percentiles C 25 and C 75 . It was found
that in most cases, the distribution of the tested variable was not
normal. Analyzes carried out for the tested section of the road
showed that the traffic of light motor - and medium heavy -
vehicles is the main source of road noise. It has been shown that
maximum values of the equivalent sound level occur for the
frequency of 1000 Hz. The minimum values are in the octave
band f 0 = 125 Hz.

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Frequency analysis of urban traffic noise