The Disturbing Reality of Noise Pollution in Modern Cities

Noise pollution is one of the most underrated environmental problems in our society. Most people think that it’s not a big deal, but they’re wrong. According to the World Health Organization, noise pollution can cause hearing loss, cardiovascular problems, and stress. It can also lead to increased crime rates and decreased quality of life. In this blog post, we will discuss the disturbing reality of noise pollution in modern cities. We will also provide some solutions for reducing noise levels in our communities.

One of the biggest problems with noise pollution is that it’s often invisible. You can’t see or smell it, but it’s there. In fact, noise levels have been increasing at an alarming rate in recent years. This is largely due to the increase in traffic and development in our cities. As a result, many people are exposed to harmful levels of noise on a daily basis.

Noise pollution isn’t just a nuisance; it’s a serious health hazard. Studies have shown that exposure to loud noises can cause hearing loss, cardiovascular problems, and stress. It can also lead to increased crime rates and decreased quality of life. In short, noise pollution is a major public health issue that we need to address urgently..

There are several things we can do to reduce noise pollution in our cities. We need to make sure that new developments are designed with noise reduction in mind. We also need to promote alternative modes of transportation, such as cycling and public transport, which create less noise than cars. Finally, we need to raise awareness about the dangers of noise pollution and how people can protect themselves from it.

We can’t solve this problem overnight, but by working together we can make our cities quieter and healthier places to live.

Noise Measurement

The decibel (dB) is a common unit of sound measurement that represents a logarithmic ratio of the sound’s power relative to the threshold of human hearing.

Sound level (dB) = 20 log10 (p measured / p ref)

Where pref= 20 micropascals

The measurement of noise is done in terms of both its frequency and intensity; the dB(A) weights sounds in the audible range of humans.

A change of 3 dB(A) in noise, a level that is typically perceivable, corresponds to a doubling in the loudness of the generated noise. A 10 dB(A) change in noise represents an eightfold increase in power and a perceived loudness increase of 2.5 times (10 = 8).

Urban Noise Sources

Cities have a variety of sources of noise; the most serious and preventable ones are traffic and industry. In most cities, motor vehicle traffic is often the primary source of noise.

Traffic

Vehicle traction systems, such as the engine, braking, exhaust the wheel and road or rail interface, and displacement of air are all relevant at high speeds. VEHICLE NOISE Noise from automobiles, motorcycles, buses, and trains is a result of vehicle traction systems including the engine, braking noise is created by the engines, tires and brakes of cars, buses, trucks and motorcycles. It also includes the sound of horns, radios and other equipment in vehicles.

Industry noise comes from factories, construction sites and other places where equipment is used.

Other sources of urban noise include: 

• Aircraft • Railroads • Recreational activities (sporting events, lawn mowers) • Street performers • Domestic appliances (washing machines, dishwashers)

Mitigating Noise Pollution

Noise pollution can be mitigated through a variety of means such as using less noisy machines or employing effective muffling techniques. In general however it must be recognized that there will always be some level of environmental noise in an urban area.