What are the hazards of noise to humans?

Noise refers to noisy and harsh sounds that make people very irritated. Noise is not only unpleasant to the ear, but also has an impact on the human body. The harm of noise is not only reflected in the impact on life, but also very harmful to the human body. In particular, the harm of noise to people's sleep and hearing is more obvious.

1. Sleep

Noise has a great impact on people's sleep. Even when people are sleeping, their hearing is still stimulated by noise. Noise can cause frequent dreams, easy awakening, and reduced sleep quality, etc. Sudden noise has a more prominent impact on sleep.

2. Attention

Noise can distract people's attention, leading to slow reaction, fatigue, decreased work efficiency and increased error rate. Noise can also mask safety signals, such as alarm signals and vehicle driving signals, causing accidents.

3. Listening

The most direct harm of noise to the human body is hearing damage. When people enter a strong noise environment and are exposed for a period of time, they will feel discomfort in their ears and even have headaches. If you leave the noisy environment and rest in a quiet place for a while, your hearing will gradually return to normal. This phenomenon is called temporary hearing threshold shift, also known as auditory fatigue.

4. Nervous system

Because noise acts on the central nervous system of the brain through the auditory organs, thus affecting various organs throughout the body, noise not only causes damage to human hearing, but also causes harm to other systems of the human body. Due to the effects of noise, neurasthenia symptoms such as headache, brain swelling, tinnitus, insomnia, general fatigue and memory loss may occur.

5. Noise interference with normal life and work

Noise has a great impact on people's sleep. Even when people are sleeping, their hearing is still stimulated by noise. Noise can cause frequent dreams, easy awakening, and reduced sleep quality, etc. Sudden noise has a more prominent impact on sleep. Noise can interfere with people's conversation, work and study. Experiments show that when a person is disturbed by sudden noise, he will lose his concentration for 4 seconds. According to statistics, noise can reduce labor productivity by 10 to 50%. As the noise increases, the error rate rises. It can be seen from this that noise can distract people's attention, leading to slow reaction, fatigue, decreased work efficiency and increased error rate. Noise can also mask safety signals, such as alarm signals and vehicle driving signals, causing accidents.