Noise generation is associated with most of our each day activities. A wholesome human ear responds to a completely massive shape of SPL from - the threshold of being attentive to at zero dB, uncomfortable at 100-a hundred twenty dB and painful at 130-a hundred and forty dB(3). Due to the severa negative impacts of noise on human beings and environment (See LO-5), noise need to be controlled. The method or the mixture of techniques to be employed for noise manipulate depend upon the amount of the noise lessen price required, nature of the device used and the monetary device elements of the available techniques. 
Reduction withinside the noise exposure time or isolation of species from the reassets form part of the noise manipulate techniques besides presenting private ear protection, engineered manipulate for noise lessen price at deliver and/or diversion withinside the trajectory of sound waves. 
Noise Control at Source 
The noise pollution can be controlled at the deliver of generation itself with the beneficial aid of the usage of the usage of techniques like 
Reducing the noise stages from domestic sectors: The domestic noise coming from radio, tape recorders, television sets, mixers, washing machines, cooking operations can be minimised with the beneficial aid of the usage of their selective and sensible operation. By usage of carpets or any absorbing material, the noise generated from felling of gadgets in house can be minimised. 
Maintenance of vehicles: Regular servicing and tuning of vehicles will reduce the noise stages. Fixing of silencers to vehicles, 
wheelers etc., will reduce the noise stages. 
Control over vibrations: The vibrations of materials may be controlled using proper foundations, rubber padding etc. to reduce the noise stages because of vibrations. 
Low voice speaking: Speaking at low voices enough for communique reduces the more noise stages. 
Prohibition on usage of loud speakers: By now no longer permitting the usage of loudspeakers withinside the habitant zones except for critical meetings / functions. Now-a-days, the metropolis Administration of the metro cities in India, is becoming stringent on usage of loudspeakers. 
Selection of machine: Optimum desire of machine machine or device reduces more noise stages. For example desire of chairs, or desire of wonderful machine/device which generate masses a good buy a whole lot much less noise (Sound) due to its superior generation etc. is also an critical detail in noise minimisation method. 
Maintenance of machines: Proper lubrication and preservation of machines, vehicles etc. will reduce noise stages. For example, it`s miles a no longer unusualplace enjoy that, many additives of a car will become loose on the equal time as on a rugged direction of journey. If the ones loose additives aren`t properly fitted, they`ll generate noise and motive annoyance to the driver/passenger.