Investigation of the noise characteristics of the traffic flow on the basis of the directional microphone

Abstract

Investigation of the noise characteristics of the traffic flow on the basis of the directional microphone

Frantsev S.M., Savenkov A.V.

Incoming article date: 18.05.2015

The investigation and analysis of noise characteristics of the traffic flow via a directional microphone. The principle of operation of directional microphones and test procedures. Full-scale research made microphone-controlled lane highway. When approaching the vehicle to the maximum level of the microphone signal is necessary at the time of finding the vehicle in front of a microphone. Investigations at the location detection hole up from the road surface to the left (toward the oncoming lane controlled by car) and right (after moving band controlled by car). Location detecting holes toward the oncoming lane controlled by car is the best, as it allows to ensure minimum impact on the accuracy of counting cars traveling on the adjacent oncoming lane.

Keywords: noise characteristics, transport stream, passive acoustic detector, directional microphone