Noise Pollution

We know the sounds of cities are loud enough to cause great harm to people's hearing in the U.S. One person out of twenty has got some hearing loss. And all over the world the situation is getting worse and worse all the time since the noise increases with the population.

With the development of machines, noise has also increased greatly in the 20th century. We live surrounded by loud planes , trucks and electric tools. TV sets and radios add up to 90 or 100 decibels, a certain unit used to measure the loudness of sound. A normal dialogue reaches 55 decibels; a plane goes to 100, and an ordinary train, reaching the station , can be twice as loud as the loudest plane. Disco music reaches about 118. At decibels the ear stops hearing sound, and pain starts. How terrible if things go on like this!

Noise pollution

It is well known that in the United States, the loud noise in cities has caused great damage to people's hearing. One in 20 people has some degree of hearing loss. Worldwide, this situation is getting worse as noise becomes more and more serious as the population continues to grow.

In the 20th century, with the development of machinery manufacturing industry, noise pollution also increased day by day. We live among deafening planes, trucks, and appliances. TVs and radios combined can even reach 90 to 100 decibels. An ordinary conversation is 55 decibels; an airplane is flying at 100 decibels; an ordinary train arriving at the station can be twice as loud as the noisiest airplane; disco music is as high as 118 decibels. When the level reaches decibel, the ear will lose hearing and feel painful. What a terrible thing it would be if this continues!