Question

Speech over noise pollution

Answer 1

 Therefore, noise pollution is unwanted sound, dumped into the atmosphere without regard to the adverse effects it may have. Encyclopedia Britannica defines noise pollution thus “In acoustics noise is defined as any undesired sound. According to this definition, a sound of church bells may be music to others. Usually, noise is a mixture of many tones combined in a non-musical manner.

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Answer 2

There is very little demarcation of sound and noise. Sound is a normal phenomenon of life while noise is nothing but unwanted sound. Therefore, noise pollution is unwanted sound, dumped into the atmosphere without regard to the adverse effects it may have. Encyclopedia Britannica defines noise pollution thus “In acoustics noise is defined as any undesired sound. According to this definition, a sound of church bells may be music to others. Usually, noise is a mixture of many tones combined in a non-musical manner.

Sources of Noise Pollution

There are two main sources of noise pollution:

(a) Industrial sources; and

b) Non-industrial sources

(a) Industrial Sources:

The industrial sources may include noise from various industries operating around cities. Most of the major industries run with heavy machinery and produce with higher intensity.

(b) Non-industrial Sources:

These include the following sources of noise pollution:

(i) Loudspeaker:

In India, one of the very common man-made sources of noise pollution is the frequent use of loudspeaker. For every occasion, religious, political party gathering or marriage party, the presence of loudspeaker is a must.

(ii) Domestic Appliances:

Noise is generated from domestic appliances like sewing machines, coolers, water pumps, food mixers and floor mills etc.

(iii) Means of Transport:

Development of transport sector is the main cause of noise pollution in India. The increase in the number of vehicles like cars, jeeps, trucks, auto rickshaws, motor cycles and buses have resulted in increased noise pollution. Construction of new roads and railway lines has led to increase in the number of vehicles and trains.

(iv) Other Causes:

Harvesters, tractors and harrows are among some agricultural devices used in fields, which produce noise. Noise is also generated from TV, radio and tape recorders.

Measures to Control Noise Pollution:

There can be several ways and means to tackle this problem but it depends on the nature of source, kind and intensity of sound.

(i) Use of Silencing Devices. In the first approach, design and fabrication of silencing devices and their use in all the power producing sources should be used for aircrafts, trucks, buses, motor cycles, industrial machines and home appliances. It can also be reduced by changing designs and operation of machines, vibration, control, sound proof cabins and sound absorbing materials.

(ii) Traffic Management. The second approach is that of traffic management of roads. There may be limits of noise producing traffic in different zones of dwellings notifying as silence zones where noisy traffic, procession and other noise raising should be prohibited. Similarly, industrial areas may be separated from the peace zones.

(iii) Maximum restriction should be imposed to the use of loudspeakers in social ceremonies.

(iv) Irregular and unnecessary use of pressure horns by the drivers of trucks, buses and other automobiles should be checked.

(v) Punishment should be provided for non-use of silencers and proper horns.