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Noise Pollution

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NOISE POLLUTION

1. What is noise pollution?


- Noise pollution is a condition in which the noise in your surrounding
environment exceeds the permissible threshold of human hearing. So
what is the permissible hearing threshold for humans? Normally, normal
people's ears can hear up to 194dB, but the allowable noise level is only
from 0dB to 80 dB. Therefore, sounds with an intensity greater than 80dB
can cause noise pollution.
2. Causes of noise pollution –
- Can be divided into 2 causes of noise pollution: Natural causes and
human causes.
• Natural causes
- Volcanoes and earthquakes are natural activities that cause noise
pollution.
• Human causes
- This is the main cause of noise pollution today, having a strong and
frequent impact on human activities
• Noise pollution from vehicles
- Engine sounds, sounds Car horns, planes taking off, ships... are the
main factors causing a large amount of noise today.
• Noise pollution from construction and production activities
- Construction activities always have noise caused by mechanical
equipment such as excavators, bulldozers, excavators... The high intensity
of this sound mainly comes from milling factories and metallurgy
factories...
• Noise pollution due to daily activities
- Currently, people often have the habit of using box speakers and
singing karaoke at high volume... which significantly affects their hearing.
sense of the listener.
3. Consequences of noise pollution
- Effects on people
+ Effects on mental health: Loud or frequent noise can cause anxiety and
stress in people. Noise is one of the causes of sleep disorders.
+Effects on physical health: Loud sounds can cause hearing loss. Short-
term noise pollution can temporarily increase blood pressure. Long-term
exposure can increase the incidence of cardiovascular disease, and
increase blood viscosity...
- Effects on animals: Too loud noise will hinder the animal's ability to
find food.
4. Measures to prevent noise pollution
+ Use noise-canceling earplugs
+ Make plaster ceilings
+ Use soundproof doors
+ Use soundproof panels
+ Plant lots of trees

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