Environmental acoustics Essay

The research from different part of the world has been able to reveal that around 80 million people are exposed to unacceptable juicy interference levels particularly, the noise emitted from lane/tyre. Thus, noise sources that affect people is broadly speaking from road traffic noise, which is by far the most pervasive. In UK for example, any over 90% of the population hear traffic noise directly from house while 10% consider noise highly annoying. Thus to strangle the annoying traffic noise, it is mandatory to consider the order of reducingthe sources of noise by improving the tyres and road surfaces. While various measures grant been adoptive in reducing the propagation of noise in the sensitive areas, all of these measures have been note to play a vital part in achieving an acceptable acoustical environment for people living near to roads. Although, in the attempt to control noise on the road surface, there is take to study the noise generated by the tyre/road intera ction. Most researches conducted have been revealed that Tyre/road surface interaction noise tends to dominate at moderate and high road speeds.Thus, to control the vehicles noise, there have been various encouragements to encourage innovation and to reflect the improvements made in vehicle design. However, the elevate has been quite slower concerning the tyre noise, thus it was only in recent time that there that control for tyre noise has been introduced in the EU Directive of 2001/43/EC. The directive has established a test method for the type approval of tyres with respect to noise arcs and limit values for different types of tyre.Thus, to measure the road/tyre noise emission, this paper willing digest on the noise emitted from different types on different road surface. The commencement part of the paper will focus on the introduction. Moreover, the methodology apply in carrying out the test of tyre/road noise emission will be extensively analysed in this paper. Furthermo re, the result of the test will also be made available in the research paper. Finally, decision and recommendation for the effective methods of reducing the noise pollution from the tyre/road surface will be focused. ( Environmental Research 2004)