Vehicle type and driving speed are important factors affecting the vehicle noise spectrum.
Therefore, according to the noise spectrum characteristics of single vehicles, the types of …

Vehicle type and driving speed are important factors affecting the vehicle noise spectrum.
Therefore, according to the noise spectrum characteristics of single vehicles, the types of …

Two expressway sections including the south section of the beltway in Xian and the start
section of the Xi'an-Lantian expressway were selected in this study. By monitoring the …

Recently, traffic noise is said to be one of the serious social problems in many countries as
increase of traffic and highways expanding throughout the country. The research and …

ABSTRACT The Acoustical Society of Japan published a new prediction model of road traffic
noise,“ASJ RTN-Model 2008”, in which the calculation formula of sound power level of each …

Traffic noise surveying and analysis was performed along three main roads in the Beijing
urban area—the 2nd and 3rd ring roads circling the central downtown area and Chang-An …

The road traffic noise becomes aggravated due to the rapid increase of motor vehicles. It has
a great effect on the dwelling environment. We investigated the characteristics and sources …

As the first step to obtain a city urban area noise map of road traffic noise, sound power
levels of vehicles on the roads should be accurately estimated over a wide area. In Japan …

For accurate road traffic noise prediction, it is important to take account of vehicle noise
directivities. In this study, the approximate expressions of the directivities were constructed …

ABSTRACT The Acoustical Society of Japan (ASJ) has published a new revised version of
road traffic noise prediction method “ASJ RTN-Model 2013”, in which the calculation …