The Impact of the Size of Digital Noise Meters (Decibel Meters) on Humans
Digital noise meter decibel meter is a unit of decibel sound pressure level, denoted as dB, used to represent the measurement unit of sound (the size of sound). The sound that the human ear can hear just now is 0-10 decibels. For every 10 decibel increase, it indicates a 10 fold increase in volume, that is, from 1 decibel to 20 decibels, it indicates a 100 fold increase in volume. 0-20 decibels, very quiet, almost imperceptible. 20-40 decibels, equivalent to speaking softly.
40-60 decibels, equivalent to regular indoor conversations.
60-70 decibels, equivalent to shouting loudly, can damage nerves.
70-90 decibels, very noisy, noisy streets.
Long term learning and living in such an environment can gradually damage a person's nerve cells. 90-100 decibels, noisy bar sounds, air pressure, and drill sounds can cause hearing loss.
100-120 decibels can be unbearable, causing ear pain that can temporarily lead to deafness in just a few minutes.
The score of digital noise can be summarized into the following zones: below 60 is the harmless zone, 60-90 is the harmful zone, and above 90 is the harmful zone.
When the sound level is around 30 decibels, it generally does not affect normal life and rest, but when it reaches 50 decibels or above, people have a strong feeling and find it difficult to fall asleep. The car noise is 80-100 decibels, and the accompanying sound of the TV can reach 80 decibels,
People who live in a noise environment of 85-90 decibels for a long time will suffer from 'noise sickness'.
The sound of a chainsaw is about 110 decibels, while the sound of a jet plane is about 130 decibels.
When the sound reaches over 100 decibels, the human ear feels pain and can temporarily cause deafness in a few minutes.
If a person is exposed to low-frequency noise for a long time, it is easy to cause various neurological disorders such as neurasthenia. The ideal sound intensity environment for women during pregnancy is not less than 10 decibels and not more than 60 decibels.
