What is the smallest decibel that a person can hear

The sound of 60 decibels is in the middle of the noise and normal sound decibels, which is equivalent to the sound of people making loud noises, similar to the medium size of sound decibels emitted by loudspeakers. According to the environmental noise pollution standard, 60 decibels of sound is basically the standard of the noise range.

According to the feeling that sound decibel brings to the human body, 10 decibel is about the sound that the human ear can just feel; 20-40 decibels is about the whisper in a couple's ear; 40-60 decibels belong to our normal conversation sound; More than 60 decibels is in the noisy range; 60-70 decibels, on the other hand, are noises that begin to damage the hearing nerve; If it is above 90 decibels, it will cause hearing damage; In a space of 100-120 decibels, humans will temporarily become deaf (deaf).

The number of decibels of common sounds.

The person whispers: about 30 decibels.

Speak loudly: 60-70 decibels.

Car noise: 80 100 decibels.

TV sound: up to 85 decibels.

Chainsaw: 110 decibels.

Volume on the road: 60-80 decibels.

Usual speaking voice: 50-60 decibels.

Jets: about 130 decibels.

The minimum volume that the human ear can hear is 0db, that is, there is sound from above 0db, in fact, the sound we can hear has a lot to do with the ambient noise, the background noise of the hall is about 20-25db, the background noise of the apartment on the street is often as high as 60db or more, and the very quiet apartment can have about 35db of background noise, which can already make us feel very quiet. If the ambient noise is too high, the volume that is too small will be muffled by the noise and cannot be perceived by the brain. The maximum volume that the human ear can tolerate is about 130db, at which point the ear will start to feel pain, and even loud can cause damage to the ear.

Each person's perception of the frequency response to sound will be different, and hearing will decline as they age. In fact, the human ear also has different sensitivity differences for different frequencies, the lower the frequency, the worse the sensitivity, and the higher the frequency, the lower the sensitivity. The sensitivity of the human ear in the frequency range of 2000Hz-5000Hz is relatively high, especially in the frequency range of 3000Hz-4000Hz (this is due to the resonance of the ear canal).

This is also the reason why most people think that the frequency range between 3000hz and 4000hz is noisy at loud volumes, and this frequency domain should focus on sound absorption when dealing with listening space. Mineral fiber boards on ceilings, which are widely used in offices or public spaces on the market, are used to absorb this frequency domain.

0 decibels is the lowest limit of human hearing. What is 0 decibels? It is the sound of a needle falling to the ground without any sound.

The sound of calm breathing is 10 decibels; The rustle of leaves is 15 decibels; The whisper of a person is 20 30 decibels; The quiet state of the park and the crickets are 50 decibels; 50 to 60 decibels for ordinary conversation; 80 decibels for noisy downtown; The sound of a subway or elevated railway train passing by is 100 decibels; The sound of the car horn is 110 decibels; Thunderbolt thunder is 120 decibels.

A 50 decibel chat is a gathering where humans feel comfortable, and if everyone chatters, more than 80 decibels, it will be annoying. Unless there is a bunch of alcoholic buddies, they will get more and more excited, and they will all lie there in the end.

The lowest sound that can be heard by the human ear is 1 decibel. 1 decibel is the sound that the human ear can just hear, the sound below 20 decibels, generally speaking, we think it is quiet, of course, generally 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 belong to our normal conversation 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 normal hearing value of a person is -10-25 decibels.

It's quiet at around 20 decibels.

Hearing loss greater than 25 decibels is deafness, and there are four levels: 25-40 mild, 41-60 moderate, 61-80 severe, and greater than 80 very severe. Hearing loss should be intervened in time, and the sooner you wear hearing aids, the better, as long as you have residual hearing, you can wear hearing aids. It is recommended to go to a professional fitting center for matching.

20-40 dB is about the whisper of Nan Nan for people. 40-60 dB of normal communication sound. More than 60 decibels, very loud sounds, more than 90 decibels, our hearing is impaired, so hearing at 25 decibels is within the normal hearing range.

The normal hearing range is below 25db, 41-60db is mild hearing loss, 61-80db is moderate hearing loss, 81-90db is severe hearing loss, and above 90db is very severe hearing loss. Generally, below 25 decibels is considered normal hearing. But you also have to have a resolution of 90 to 100 percent.

Normal hearing is the ability to hear sounds within 25 decibels in quiet conditions. If the sound is greater than 26 decibels, it is hearing loss. The general examination range is 250-800 Hz, in this range the sound can be heard within 25 decibels, can be regarded as normal, if it is 26-40 decibels, it is mild hearing loss, 41-55 dB is moderate hearing loss, 56-70 dB is moderate to severe hearing loss, 71-85 dB is severe hearing loss, more than 85 decibels, it is very severe hearing loss.

The threshold refers to the minimum audible frequency range, and the hearing frequency range of a normal person is 20Hz--20K Hz. Discernment refers to the ability to comprehend speech. In general, the longer the hearing loss, the more deterioration of hearing function and the worse the resolution of speech.

People with hearing impairments tend to have a smaller range of sound frequencies. The sound resolution is different for each frequency.

Decibel is a relatively small unit of sound, people generally can hear the smallest sound at 40 to 60 decibels, and the sound is particularly small.

It is a unit of measurement that measures the ratio of two quantities of the same unit, and is mainly used to measure the intensity of sound. The lowest decibel that our human ears can hear should be one decibel.

In fact, it is the unit of sound, and the minimum should be able to hear one decibel, and the size of this decibel is also related to the living environment.

0 2 0 dB It's so quiet that it's almost invisible.

2 0 4 0 dB is quiet, like a whisper.

4 0 6 0 dB Normal, Ordinary Indoor Conversation.

7 0 9 0 dB is noisy and nerve cells are damaged6 0 7 0 dB is noisy and nerve-damaging.

9 0 1 0 0 dB Noise intensifies, hearing loss 1 0 0 1 2 0 dB is unbearable, and temporary deafness occurs after one minute.

If you whisper, it may be 50 decibels, usually almost 80 decibels, and shouting is almost 120 decibels.

"Decibel" does not reflect the absolute loudness of the sound, it is based on a certain sound, describing the relative relationship of the loudness of the sound. Scientifically, it converts an exponentially growing physical quantity into a linearly growing physical quantity, which is easy to calculate. 1 decibel is the sound that the human ear can just hear, and the sound below 20 decibels.

The normal sound of human speech is 40 60 decibels, if it is a low voice is about 30 decibels, only when talking loudly will it reach 60 70 decibels, the decibel value is normal, the decibel value in life is not too high, only too noisy environments may reach 100 decibels. The hum of the refrigerator is at 45 decibels, and the sound of a typewriter is at 60 decibels.

The smallest sound that the ear can hear is 20Hz.

The human ear perceives loudness and flatter sound in the mid-range range. The perceived loudness of sound in the treble segment gradually decreases with increasing frequency, forming a diagonal line. The bass band weakens sharply below 80Hz, and the slope steepness is large.

We refer to the sharp attenuation of the bass range as the phenomenon of "sluggishness" in the low frequencies.

The sensitivity of the human ear to the orientation, loudness, pitch and timbre of the sound is different, and there are great differences. The human ear has a very strong ability to distinguish the direction and distance of sound propagation, and can accurately identify the direction of the sound source no matter which direction the sound comes from. This auditory property of the human ear is called "sense of bearing".

20Hz to 20000Hz

Hertz is a unit of frequency. The hearing range of a normal person is between 0 25 decibels (dB).

A decibel is a unit of sound pressure level, denoted as dBUsed to indicate the magnitude of the sound. 1 decibel is about the sound that a person can just feel.

Hearing loss is calculated as pure tone audiometry and average hearing of air conductance in Hz.

According to the World Health Organization Grading Standards for Deafness:

26 40 dB; Mild deafness.

41 55 dB: Moderately deaf.

56 70 dB: moderate to severe deafness.

71 90 dB: Severely deaf.

Volume analogy.

130 dB Jet take-off sound.

110 dB Spiral Aircraft Take-off Sound.

105 dB Permanent impairment of hearing.

100 dB pneumatic rig sound.

90 dB Noisy bar ambient sound.

85 dB and below will not destroy the hair cells in the cochlea.

80 dB noisy office.

75 dB upper limit of human ear comfort.

70 dB street ambient sound.

50 dB normal conversation sound.

20 dB whispering.

According to the average person's sense of hearing, 0 2 0 decibels are very quiet, almost invisible. 2 0 4 0 dB is quiet, like a whisper. 4 0 6 0 dB average.

Ordinary indoor conversation 6 0 7 0 dB is noisy and nerve-damaging. 7 0 9 0 decibels are noisy and nerve cells are destroyed. 9 0 1 0 0 dB Loud and hearing impaired.

1 0 0 1 2 0 decibels are unbearable, and a minute of deafness is temporary.

Above 90 decibels: extremely deaf or completely deaf.

20Hz to 20000Hz

Hertz is a unit of frequency. The hearing range of a normal person is between 0 25 decibels (dB).

A decibel is a unit of sound pressure level, denoted as dBUsed to indicate the magnitude of the sound. 1 decibel is about the sound that a person can just feel.

Hearing loss is calculated as pure tone audiometry and average hearing of air conductance in Hz.

According to the World Health Organization Grading Standards for Deafness:

26 40 dB; Mild deafness.

41 55 dB: Moderately deaf.

56 70 dB: moderate to severe deafness.

71 90 dB: Severely deaf.

Volume analogy.

130 dB Jet take-off sound.

110 dB Spiral Aircraft Take-off Sound.

105 dB Permanent impairment of hearing.

100 dB pneumatic rig sound.

90 dB Noisy bar ambient sound.

85 dB and below will not destroy the hair cells in the cochlea.

80 dB noisy office.

75 dB upper limit of human ear comfort.

70 points Li Laobei street environmental sound.

50 dB normal conversation sound.

20 dB whispering.

According to the ordinary person's sense of hearing, 0 2 0 decibels are very quiet, and they are almost invisible. 2 0 4 0 dB is quiet, like a whisper. 4 0 6 0 dB average.

Ordinary indoor conversation 6 0 7 0 dB noisy, hole-altering nerves. 7 0 9 0 decibels are noisy and nerve cells are destroyed. 9 0 1 0 0 dB Loud and hearing impaired.

1 0 0 1 2 0 decibels are unbearable, and a minute of deafness is temporary.

Above 90 decibels: extremely deaf or completely deaf.