"Give way to the college entrance examination and reduce noise." What is the sound intensity that can be considered noise? You might as well understand
Due to the epidemic, this year’s college entrance examination is postponed by one month compared to previous years. In order not to affect the normal performance of candidates, the government also has express regulations.
"In the areas surrounding the examination room and in areas where noise-sensitive buildings are concentrated such as schools and residential areas, it is prohibited to engage in construction operations and indoor decoration activities at noon and night. And other noise-generating production, public entertainment, gatherings, units or individuals use large buildings Powerful speakers are used to hold concerts, funerals, etc.; it is prohibited to set off fireworks and firecrackers, use loudspeakers in commercial activities, or use other methods of making high noise to attract customers, motor vehicles honking in urban areas, etc. "
Facts: In fact, for many years. Recently, people have also formed the habit of "giving way to college entrance exams and reducing noise". Motor vehicles should be detoured as much as possible, and passing motor vehicles are prohibited from honking their horns. Not only that, parents waiting outside will also try to keep their voices down during the communication process, so as not to affect the candidates' normal rest and answer questions, and "add obstruction" to the college entrance examination.
Therefore, some people may ask, what is the pitch of noise that affects students' performance in exams?
What is the sound intensity that can be considered as noise? You might as well understand
The pitch we often talk about actually refers to the intensity of the sound, that is, the unit of "sound intensity" is decibels, represented by the letters "dB".
Sound intensity (, refers to the sound energy or sound wave pressure generated when an object vibrates. According to measurements, the frequency of most Chinese speech is between 500 and 3000Hz, and the sound intensity is in the area between 10 and 50dB (decibel). Cars The sound of the horn will cause the instantaneous noise value to exceed 70 decibels and approach 80 decibels.
and 0-20 decibels are very quiet and almost imperceptible to the human ear; 20-40 decibels are quiet, like whispering; 40-60 decibels are generally ordinary indoor conversations. ; 60-70 decibels are noisy and damaging to nerves (such as car horns); 70-90 decibels are very noisy (such as large truck horns) and damage nerve cells. Therefore, if there are cars honking near the examination room. It will have a big impact. Many people making loud noises will also have an impact. Generally, normal communication will have a small impact. However, it should be noted that research shows that the sound of a mosquito flying is about 40 decibels. However, when we are quiet at night, we can feel the buzzing of mosquitoes, which can sometimes be very irritating.
Our judgment of noise is not based on the number of decibels, but on how much it hinders people's normal rest. The sounds of study and work are all noise. Therefore, in order to minimize the possibility of impact, it is also very necessary for parents who are accompanying parents to control their speaking volume.
In addition, , and also arrange a very quiet resting environment for the exam, even if it is disturbed by mosquitoes and flies, because students are very fragile at this time and may even feel anxious, so parents should try to avoid external disturbance. Know how to comfort, don't say too much, just wait quietly for the exam to end.
After the exam, pay more attention to the child's mood and communicate with the class teacher if necessary. Filling out your application is the end of the first stage. The next step is to wait for the admission notice and become a prospective college student.
