How noisy is 84db? How noisy is 42db

Noise refers to sounds that are not natural and exceed a certain limit. Noise has a certain impact on people's health. The unit of noise is dB, which is 55dB during the day and 45dB at night in areas dominated by residential, cultural and educational institutions according to the provisions of the Environmental Noise Pollution Law of the Republic of China; Residential, commercial, and industrial mixed areas, 60db during the day and 50db at night.

Obviously, according to this regulation, in the office, more than 60db of sound can be considered noise.

0db is the faintest sound a person can just hear; 30-40db is an ideal quiet environment; 70db can interfere with conversation and affect productivity.

Living in a noisy environment of more than 90db for a long time can severely affect hearing and produce neurasthenia.

Headaches, high blood pressure.

and other diseases; If suddenly* exposed to a noisy environment of up to 150db, the tympanic membrane.

It will rupture and bleed, and both ears will lose hearing completely. To protect hearing, the sound should not exceed 90db; In order to guarantee work and study, the sound should not exceed 70db; To ensure rest and sleep, the sound should not exceed 20db.

Generally speaking, below 15 decibels, we can consider it to belong"Dead silence"of. 20-40 decibels is about the whisper in a couple's ear. 40-60 decibels is our normal conversational sound.

More than 60 decibels belong to the noisy range, 70 decibels we can think that it is very noisy, and begin to damage the hearing nerve, more than 90 decibels will make hearing impaired, and stay in a space of 100-120 decibels, if there is no accident, a minute human beings will be temporarily deaf (deaf). The noise of a car is between 80 and 100 decibels, taking a car emitting 90 decibels as an example, at a distance of 100 meters, a noise of 81 decibels can still be heard (the above standards will vary depending on the environment, and are not absolute).

Summary. 0 20 dB It's so quiet that it's almost invisible. 20 40 decibels are quiet, like whispering.

40 60 dB average, ordinary indoor conversation. 60 70 dB noisy, nerve-damaging. 70 90 decibels are noisy, nerve cells are destroyed.

90 100 dB Loud and loud, hearing loss. 100 120 decibels is unbearable, and a minute is temporary deafness.

Hello dear, glad to answer this question for you, how loud is 42db noise.

The air conditioner 0 20 dB is so quiet that it is almost imperceptible; 20 40 decibels are quiet, and Judah is as stupid as a whisper; 40 60 decibels, ordinary indoor hand-to-hand talk; 60 70 decibels noisy stall annihilation, nerves damage; 70 90 decibels are noisy, nerve cells are damaged; 90 100 decibels is noisy, hearing impaired, 100 120 decibels are unbearable. Therefore, the noise of 42 decibels of the air conditioner is actually not very large, and it is a noise range that ordinary people can bear.

0 20 dB It's so quiet that it's almost invisible. 20 40 decibels are quiet, like whispering. 40 60 dB average, ordinary indoor conversation.

60 70 dB noisy, nerve-damaging. 70 90 decibels are noisy, nerve cells are destroyed. 90 Rent 100 decibels Noise intensifies, hearing loss.

100 120 decibels are unbearable in the morning, and staying for a minute is deaf when the sign is temporarily balanced.

Noise up to 45db is normal indoor conversation.

Generally speaking, sleep < 45db of ambient noise in residential areas, and noise reaches the level of 45db that is generally an ordinary indoor conversation. It should not exceed 50 decibels during the day and less than 45 (40) decibels at night;

Work < 65 db The average person can maintain normal reaction and attention under the sound of about 40 decibels, but working in an environment above 50 decibels, after a long time, there will be hearing loss, emotional irritability, and even neurasthenia;

Listening to **80db, children live in a noise environment above 80 decibels, resulting in 50% of deaf-mute, and the noise level is only below 80 decibels, in order to maintain 40 years of long-term work without deafness; At 100 decibels, only 60% of people are not deaf. If a person lives in an environment above 80 decibels for a long time, it will cause emotional irritability and hearing loss.

42db large. db is the decibel unit, 42 decibels is a relatively quiet environment, the sound of people talking quietly is roughly close to 40 decibels, 18 decibel is about 60 times worse than 24 slow (noise), so 18 decibel is basically silent. Therefore, 42 dB is greater than 18 dB.

0 20 dB It's quiet, and I almost feel like the socks can't be noisy. 20 40 decibels are quiet, like whispering. 40 60 dB average, ordinary indoor conversation.

60 70 dB noisy, nerve-damaging. 70 90 decibels are noisy, nerve cells are destroyed. 90 100 dB Loud noise, hearing loss.

100 120 decibels is unbearable, and a minute is temporary deafness.

The 46dB noise is equivalent to a normal indoor conversation and is not too harsh or noisy, but it can still be seen as a distraction if a quiet environment is required. In modern society, there are many factors that can contribute to noise pollution, such as the operation of industrial machinery, construction sites, traffic flow, and crowd gatherings. Therefore, we need to understand the standards for noise levels and how to reduce the impact of noise pollution on us.

To understand the noise level, we need to use decibel units. A decibel is a unit used to measure the intensity of sound, and the brigade orange is usually decomposed by the symbol db table. The decibel scale is based on a benchmark value, the human hearing threshold, which is 0 decibels.

46dB noise is equivalent to 10 times the sound level of a quiet library, but it is still in the lower noise level category. However, prolonged exposure to loud noises can lead to mental and physical health problems. WHO recommends that noise levels in indoor environments should not exceed 35 decibels.

Reducing noise pollution is not an easy problem to solve, but there are ways to try to reduce noise levels. First, we can wear earbuds or headphones to listen to content such as ** and podcasts in a noisy environment to avoid being distracted by the outside world. Another way is to install soundproofing materials such as soundproof windows, bumper wheel doors, walls, etc., to reduce the amount of indoor noise.

Finally, if you're going to live outdoors, such as shopping, running, walking, etc., choose a relatively quiet location, such as a park or suburbs.

In conclusion, the 46db noise level is equivalent to the sound level of a normal conversation indoors, which is not too loud noise, but it can still adversely affect our health and well-being. It is important to understand the standards for noise levels and how to reduce noise pollution. <>

The noise of <>50 decibels is similar to that of ordinary indoor conversation. A noise level of 30 to 40 dB is a relatively quiet normal environment; Anything above 50 decibels can affect sleep and rest. More than 70 decibels interfere with conversations, affect work efficiency, and even accidents; Long-term work or living in a noise environment above 90 decibels can seriously affect hearing and lead to the occurrence of other diseases.