Sound is everywhere, but when the sound is too noisy, it will cause adverse effects on people and the surrounding environment, it will form noise pollution, which not only interferes with people's life and work, but also may damage hearing and induce a variety of diseases.
In modern life, noise pollution has become a problem that can not be ignored. Many people may not understand how harmful noise is to human beings. In fact, the harm of noise pollution to human body is beyond imagination.
60 decibels - 70 decibels or so, will affect the normal human sleep and rest.
70 decibels to 100 decibels of sound can make
people upset, distracted, and even affect work efficiency, accidents.
More than 120 decibels will lead to total deafness. If people are exposed to high noise environment for a long time, they will cause cardiovascular and cerebrovascular diseases: incidence rate of hypertension, atherosclerosis and coronary heart disease is 2 to 3 times higher than that of ordinary people.
Since noise will have a huge impact on our body and mind, what kind of good methods can let us "reduce noise"?
Noise reduction artifact
Wearing earplugs or earphones is now our daily life. If you strongly demand a quiet environment, it may be better to wear active noise reduction headphones.
Different from passive noise reduction earphones, active noise reduction earphones make use of the interference between sound waves. In the specific space of earphones, a secondary noise with opposite phase and equal amplitude and frequency will be produced, so as to eliminate the noise. It's very effective for low-frequency noise, but it's a little more expensive.
Biological noise reduction
Many kinds of plants can be planted indoors, which can not only reduce the noise, but also decorate the environment. Plants can reduce noise because they can reflect the noise projected on the leaves to all directions. The slight vibration of the leaves also reduces the energy of the noise and enhances the noise reduction effect.
ask for help
As a student, you can't stand artificial noise in the dormitory. You may as well tell your roommates frankly. I believe that everyone is an understanding little angel and will be willing to reduce the noise.
When you are at home or in the workplace, if the noise is very loud, you can call the environmental complaint hotline for feedback.
Noise will increase the consumption of some amino acids and vitamin B, and the lack of these two substances will reduce the tolerance of human body to noise. Therefore, we can supplement the right amount of amino acids and vitamins to enhance the tolerance of the human body to noise.