First of all noise levels have to be measured or predicted and compared with the relevant standard, so that a noise problem is known to exist then adopt three strategies which entail few noise control procedures. These strategies are:
(i) Control at the source
(ii) Control along the paths of a sound from sources receiver
(iii) Control at the Receiver
By considering possible noise control measures related to each of these strategies in turn, the best single measure or combination of measures can be identified. In general the most effective way of tackling a noise problem is at source. Control of both road and air traffic noise at source is possible by quietening individual vehicles which are subject to legal noise linits. The main concern, usually is the techniques should include specially constructed noise barriers in the case of road traffic noise. Take-off and landing restrictiona and "Minimum Noise" routes in the case of aircraft, and double glazing of noise effected facades for both road and air traffic noise. Other noise sources, with whose control we shall be concerned include construction sites and industrial premises.
The Control of Noise at the Source: In a situation containing several noise sources and where a noise problem has been shown to exist, there each source should be identified, and the most dominant located, so that priorities for noise reduction can be established.