Introduction
Pollution is described as the introduction of contaminants into nature that degrades its quality. One can classify pollution by the type of contaminants present and the environment in which they are introduced. Along with water and air pollution, noise pollution is one of the most prevalent issues in cities. This is because there are too many new vehicles introduced each year. Apart from vehicles, additional sources of noise pollution include construction, crowds, concerts, and air traffic. The effects of prolonged exposure to loud noise on human health are numerous and negative.
What Is Noise Pollution?
The transfer of excessive amounts of sound into the environment is referred to as noise pollution. Noise pollution is often known as sound pollution or environmental noise. However, noise pollution does not apply to all sounds. According to the World Health Organization (WHO), noise above 65 decibels (dB) is considered noise pollution. Furthermore, noise becomes hazardous when it exceeds 75 dB and painful when it exceeds 120 dB. As a result, noise levels should be kept below 65 dB during the day and over 30 dB at night. Noise pollution has a wide range of psychological and physiological consequences on human health, causing many disorders.
What Are the Causes of Noise Pollution?
There are several sources of noise pollution, but the following are the most significant.
1. Traffic Noise: The most unpleasant sound in cities is traffic noise. For instance, a bus horn produces 100 dB, while a car horn produces 90 dB.
2. Air Traffic Noise: A single airplane produces 130 dB, which has a higher impact than the number of cars on the highways despite fewer aircraft flying over cities.
3. Construction Sites: Construction of buildings, parking lots, and resurfacing roads and pavement make a lot of noise. For instance, a pneumatic drill generates 110 dB.
4. Catering and Nightlife: When the weather is nice, bars, restaurants, and terraces that flow outside can generate more noise than 100 dB. This includes the sounds coming from bars and clubs.
5. Animals: Animals can make noise that is difficult to hear. For instance, a howling or barking dog can produce between 60 and 80 dB of sound.
What Are the Diseases Caused by Noise Pollution?
Individuals who live in cities usually do not comprehend how noise pollution harms people. They consequently overexpose themselves to loud noise. Noise-Induced Hearing Loss (NIHL) is the most common health problem induced by noise pollution. Additionally, it can result in high blood pressure, stress, sleep disturbances, and cardiovascular diseases.
Noise pollution is harmful to animals as well as humans. Domesticated animals such as dogs and cats are particularly vulnerable to noise pollution in cities and towns. During festivals, when people light firecrackers or play music over the loudspeaker, animals suffer due to noise pollution.
What Are the Impacts of Noise Pollution?
Noise pollution can harm humans, animals, and the environment. Various effects of noise pollution on people's physical and mental health and children are:
1. Impact of Noise Pollution on Physical Health: Direct or indirect exposure to noise can have negative effects on one's physical health. Those who have been exposed to loud sounds for an extended period may develop hearing impairment. The many forms of noise-induced hearing impairment are:
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Paracusis (impaired hearing).
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Tinnitus (ringing in the ears).
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Abnormal loudness perception.
Noise pollution can affect hearing as well as blood viscosity and blood pressure in people. However, these effects are only transient, and if an individual is subjected to noise for an extended period, they may develop heart illness due to fluctuating blood pressure.
2. Impact of Noise Pollution on Mental Health: Noise pollution has the same negative consequences on mental health as air and water pollution. Unwanted loud noises can play a role in mental health issues such as stress and anxiety. Moreover, noise pollution is a significant contributor to sleep disturbances, which makes it harder to get or stay asleep. Many find it difficult to get out of bed early and have a negative attitude the following day. Noise pollution stress can also increase the heart rate in humans.
3. Impact of Noise Pollution on Children: Compared to adults, children are more vulnerable to hearing loss brought on by noise pollution. Communication and speech challenges arise from a young age when a person cannot hear certain frequencies. Unwanted noise also impairs children's ability to concentrate and interferes with their cognitive function.
How to Reduce Noise Pollution?
Noise pollution might sometimes be unavoidable. Nonetheless, there are various methods for reducing noise levels within the home. It includes the following:
1. Reducing Appliance Noise: Appliances like air conditioners, heaters, fans, and other items can raise the total noise level in the house. Consider turning them off more frequently or using a timer to make sure they only turn on when it is necessary.
2. Reduce Noise From Media Devices: Considering the level and duration of noise from music, televisions, radios, and video games can help reduce noise from media devices. Avoid listening to loud noises or having unwanted background noise playing for extended periods. Setting a time to watch TV or listen to music may be helpful.
3. Soundproofing: Strategically placing insulation throughout the home can help reduce sounds from other rooms, neighbors, or outside. Curtains, carpets, and rugs may also be helpful.
4. Replace or Repair Old Machinery: Older models of automobiles, appliances, and other products might be noisier. If anyone has any noisy household items, consider replacing them.
5. Create More Quiet Time: Try to schedule time each day for relaxing pursuits like puzzles, reading, or creative hobbies. Music and other background noise should not be played at this time.
6. Ear Protection: Use ear protection, such as earplugs or earmuffs, to lessen the impact of loud noise if it is unavoidable.
Conclusion
Noise pollution has a severe negative impact on public health. According to research, it can cause stress, impact mental health, and lead to health problems such as high blood pressure. International organizations like the WHO concur that combating this invisible threat requires public knowledge of noise pollution. For instance, stay away from loud recreational activities, choose alternative modes of transportation such as bicycles or electric cars instead of driving, conduct chores at recommended times, and insulate the home with noise-canceling materials. Also, governments can take action to ensure proper noise control and lessen noise pollution. Another crucial component of environmental education is educating the younger generation.
