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The hearing test of occupational health examination is generally several frequency bands of the left and right ears, each frequency band starts from 25 decibels, if you can't hear it, increase the volume until you hear it, and then form the final hearing test result. First of all, let's talk about the frequency band, where hz belongs to the speech frequency, which is the frequency band where we communicate and speak normally, if the hearing in this frequency band is greatly reduced, then it is basically time to affect normal life; The higher frequency band, also known as high frequency, which can be heard by the normal human ear, will not affect normal life in this frequency band, but you may not be able to hear some sounds that others can hear. Secondly, let's talk about the hearing threshold, that is, the number of 25db, 30db and so on, under normal circumstances, it is measured from 25db, if you can't hear it, it will increase to 30db, and so on, each frequency band will have a hearing threshold, which represents your hearing in this frequency band.
From the perspective of hearing alone, this situation of the subject is not an occupational contraindication (contraindications also include other factors). The so-called occupational contraindications are, to put it bluntly, that you can't do a noise job defined by industrial hygiene monitoring, just like you can't drive with red-green color blindness. Although the subject is not an occupational contraindication, but the high-frequency hearing of the right ear has a downward trend, some companies will not recruit employees in similar situations to the company in consideration of the protection of enterprises and employees when employing people.
Considering that employees may not be 100% compliant when wearing PPE such as earplugs, it is not possible to guarantee that employees will not be harmed when exposed to noise. Over time, once an occupational disease occurs, it is very painful for both the enterprise and the employee. Strictly speaking, it is not a professional taboo to engage in noise work.
Moreover, employees in noise positions are undergoing physical examinations every two years, and generally good companies have annual physical examinations. If you wear the right protective equipment, even if you still cause hearing loss, it is little by little, and it is impossible to say that you will suddenly become an occupational disease if you are okay this year and next year. Therefore, it is recommended that the subject can communicate with the EHS department in this case, and can first engage in noise positions, and then change positions if there is hearing loss during the physical examination in the second year.
Of course, this is also from the perspective of occupational health, in other words, I am the EHS of this company, and it is very likely that you will not be allowed to do noisy positions, unless you are in a hurry. <>
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High-frequency hearing loss does not affect daily work and life in the first place, but hearing is irreversible. If you are engaged in work with noise hazards, there is a certain risk for the company. This must be understood.
But if you do other jobs and go on a rotation, I don't think it's a big problem. The continuous working time is not more than 3 hours, ensure that you wear PPE during the process, and the noise is below 60 after wearing, which is actually similar to walking on the road. It is still necessary to remind that there is likely to be a lot of instantaneous noise in the working environment, and the noise reduction level of the earbuds is about 20db.
Do what you can. Hearing is irreversible, experiences can be diversified, and you can learn about production in other ways. The above is my recommendation.
Just like the soprano sings high-frequency sounds, and the bass sings bass, these two sounds are different, there is an auditory receptor called the cochlea in the ear, and the part that feels two different sounds is different, one at the bottom of the cochlea and one at the top of the cochlea. If you notice a loss of high-frequency hearing in your left ear, you must have affected the function of the part of the left cochlea that is responsible for hearing high-frequency sounds. Have you been listening to headphones a lot lately**?
This is very damaging to the ears. The respondent's reply Find the cause of the hearing loss, the cause**. If it is caused by wearing headphones to listen**, listen less**.
If the hearing loss is severe, you should go to a hearing institution to wear hearing aids in time. <>
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High-frequency (or treble) hearing loss is one of the most common types of hearing loss. Hearing professionals define high-frequency hearing loss as hearing loss between 2000 hertz (Hz) and 8000 Hz. Hearing loss in the high-frequency range is often the first sign of hearing loss.
After the hearing test, your hearing professional will use the hearing professional to interpret your test results. An audiogram is a chart that shows how well you are hearing at each frequency or pitch, which is important for speech comprehension.
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What does high-frequency hearing loss mean?
One: Missing consonants.
1: The vowels are mainly distributed in the low frequency area, generally not exceeding 3600 Hz.
2: Clear consonants are mainly distributed in the high-frequency area, generally not less than 2000 Hz.
3: Voiced consonants are mainly distributed between 250 Hz and 4000 Hz.
2. Decline in the ability to listen to language signals.
Since the sound source of the consonant is pulmonary airflow, there is less energy (about %5 of the verbal energy). with a contribution of %95 to speech clarity); The source of the original sound is the vocal cords, which have more energy (about %95% of the energy and %5% contribution to the intelligibility of the language). It can be seen that the consonants are right to hear the language.
Clarity plays a very important role. If you can't hear consonants, your ability to hear speech will be reduced or even lost.
Three: the effect of language training is not good.
1: The syllables of Chinese can be analyzed into three parts: initials, finals, and tones.
2: The precedent is the initial, the rest is the final, and the tone is the pitch of the whole syllable.
3: The initials are all consonants, and most of the center frequencies in the clear consonants are above 4kHz.
4: The precedent consonant is very important for the word and word discrimination.
5: In most syllables, the consonants must be joined by the following vowels to form a syllable.
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I can hear women whispering, I can hear birds chirping, how to diagnose high-frequency hearing loss.
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In general, it is difficult to hear long-distance speech, and it is difficult to communicate in a crowded or noisy environment, such as a bird's call.
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Noise-induced hearing loss is often located in the frequency range of one doubling of the noise frequency.
The sound gain of the pinna and ear canal changes with the change of different frequency segments: the ear canal has the largest sound gain in the frequency range of 2kHz-4kHz.
Noise-induced hearing loss is often located in the frequency range of one time above the noise frequency, industrial noise is relatively constant in the low and intermediate frequency range, and the natural resonance peak of the external auditory canal is 2kHz-4kHz, so it is most likely to cause hearing loss in the frequency range of 4kHz-6kHz. Therefore, noise deafness often starts at about 4kHz and gradually damages to higher frequencies.
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There are several frequency bands for testing hearing, in 250hz 500hz 1000hz 2000hz 4000hz 8000hz These frequency points are given to the sound, and your hearing threshold is measured, which is the smallest sound you can hear on these frequencies 250hz-500hz This frequency band belongs to low frequency, 1000hz-2000hz belongs to medium frequency, 4000hz-8000hz belongs to high frequency, your high frequency difference explains, You don't listen well in the frequency range of 4000hz-8000hz, and you listen well in the frequency range of 250-500hz.
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There are several frequency bands for testing hearing, in 250hz 500hz 1000hz 2000hz 4000hz 8000hz These copy frequency points are given to the sound, and the hearing threshold is measured, that is, the smallest sound you can hear on these frequencies 250hz-500hz This frequency band belongs to the low frequency, knowing that 1000hz-2000hz belongs to the medium frequency, 4000hz-8000hz belongs to the high frequency, your high frequency difference explains, You don't listen well in the frequency range of 4000hz-8000hz, and you listen well in the frequency range of 250-500hz.
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Hello, there are several frequency bands for audiometry hearing, in 125hz 500hz 1000hz 2000hz 4000hz 8000hz These frequency points are given to the sound, measure your hearing threshold, that is, the smallest sound you can hear on these frequencies 125hz-500hz This frequency band belongs to low frequency, 1000hz-2000hz belongs to the medium frequency, 4000hz-8000hz belongs to high frequency, your high frequency difference explains, You can't hear well in the frequency range of 4000hz-8000hz, and you will hear poorly the sound of women talking, the sound of high heels knocking, and the sound of bells striking. I hope my answer is helpful to you.
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Hearing loss is what we call hearing loss in our daily life, once people have hearing loss, it will not only affect people's normal life, but also may cause some damage to people's bodies, therefore, people must pay attention to protect their hearing in daily life, so as to be able to have a healthy body.
High-frequency hearing loss refers to the hearing damage caused by people when they are exposed to high-volume sounds entering their ears, but some people do not understand what high-frequency hearing loss means, so when they have this situation, they cannot take correct and correct measures, which will lead to the aggravation of disease symptoms, thereby affecting people's normal daily life.
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High-frequency hearing loss is what we often call hearing loss, once people have this situation, it may lead to hearing loss or hearing loss in our ears, so we hope that you can take the right measures in time when you have this situation, so as to help you try to avoid hearing loss aggravation, and friends with mild conditions will also have the possibility of **.
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High-frequency hearing loss usually refers to neurological hearing loss, and if high-frequency hearing loss occurs suddenly and is accompanied by hearing loss, it is likely to be sudden. It can also be caused by living in a noisy environment for a long time, or it may be caused by drugs.
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High-frequency hearing loss is generally due to sudden deafness, hereditary hearing loss, hearing loss caused by noise environment, etc., hearing loss varies according to the degree and type, and high-frequency hearing loss is one of the most common hearing loss, which is shown on the audiogram in the range of 2000-8000Hz, and the Changying fibrillation nucleus of the sound is the greatest benefit, which can be amplified by 10-15db at the tympanic membrane, and the hearing loss caused by noise is often located at one octave of the noise frequency. The natural formant peak of the external auditory canal is 2kHz-4kHz, so it is most likely to cause hearing loss in the frequency range of 4kHz-6kHz. Therefore, noise-induced deafness usually starts at around 4kHz and gradually affects the surrounding frequency.
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