How loud can a human hearing be heard?

The sound of 20-20000hz can be tested free of charge at a professional hearing aid store, and if there is indeed a problem, you can intervene in time.

The normal range of electrical audiometry is 1250-8000 Hz, and the hearing of normal people is generally less than 25 decibels, if it exceeds 25 decibels, it proves that the hearing has been lost. According to the degree of hearing loss, it is divided into mild, moderate or moderate severe, severe, and very severe, and the degree is different** different methods, such as moderate or above, mostly through cochlear implants**.

The hearing range of normal people is about 16 hertz to 24,000 hertz (second per second), that is, the number of times the air vibrates per second is between 20 and 20,000 times that the human ear can hear, and the number of vibrations per second is less than 20 times is called infrasound, and more than 20,000 times per second is called ultrasound. The application hearing range is between 500 Hz and 3000 Hz, and during the hearing test, about 0 dB to 10 dB is the normal range.

In a very quiet situation, the sound of the smallest sound intensity that a person can hear at a certain frequency is the hearing threshold, and the sound that causes auditory pain is the pain threshold, and between the two is the human auditory sound range, also known as the auditory domain.

There are two ways of sound conduction in the ear, namely bone conduction and air conduction, when air conduction disappears and bone conduction plays the main way of sound transmission, it is transmitted deafness, that is, peripheral hearing loss. When both conductions are reduced or even absent, it is called sensorient hearing loss, i.e., central hearing loss.

Generally, the normal hearing range of human beings is 20-20000Hz, although you can hear 14000, but we can hear 8000 every day, which can include most of the speech signals.

Basic introduction

Produce history. Heinrich Rudolf Hertz (1857-1894), a German physicist, first experimentally confirmed the existence of electromagnetic waves in 1887 and published it in 1888. He made great contributions to electromagnetism, so the SI unit of units of frequency, the hertz, was named after him.

Electricity (voltage or current), there are two types of direct current, direct current and alternating current. In communication applications, alternating current is generally used for signal transmission.

Hertz experimentally proved that electromagnetic waves exist, and that electromagnetic waves propagate at a speed equivalent to the speed of light, and the Hertz experiment opened up innovative avenues for the development of radioelectronic technologies such as radio, radar, and television.

He studied the effect of ultraviolet light on spark discharge, and discovered the photoelectric effect, believing that objects can release electrons under the irradiation of light, which became the basis for Einstein's quantum theory of light.

Real-world applications. Hertz is abbreviated as Hz. Physically, frequency is a unit of measurement that refers to the number of times a cycle fluctuates occurs per second.

The main units of measurement for high frequency are khz (i.e., 1000hz), mhz (i.e., 1000khz), ghz (i.e., 1000MHz), and THZ (i.e., 1000GHz).

Frequency is the number of times a cyclical process is repeated, cycled, or vibrated per unit of time, and is usually expressed as f.

Radio frequencies are usually measured in kilohertz (khz) or megahertz (MHz).

The passband of single-mode fiber is 100 GHz km, and the passband of multi-mode fiber can exceed 10 GHz km.

The above content reference: Encyclopedia-Hertz.

The human hearing range is 20-20,000 Hz.

The normal frequency band for human hearing is 125 Hz to 20,000 Hz, and the language range is mainly between 125 Hz and 8,000 Hz.

The sound that can be heard by the human ear is 20-20000Hz

10-25 dB of normal range for hearing.

The frequency of sound that can be heard by a person is 20 to 20 thousand hertz.

The human ear can hear sound waves with frequencies between 20Hz and 20kHz.

The ear consists of three parts: the outer ear, the middle ear, and the inner ear. Auditory receptors and positional receptors are located in the inner ear, so the ear is also called a auditory. The outer and middle ears are also listed as appendages to hearing bits.

The outer ear consists of two parts: the auricular and the external auditory canal. In addition, there are ear hairs and some glands on the ** of the external auditory canal, and the secretions and ear hairs of the glands have a certain blocking effect on the entry of foreign bodies such as dust from the outside.

What is the frequency range of the laughter that a normal human ear hears?

Hertz 300 kHz with code.

Hertz 100 kHz.

Hertz: 20 kHz (positive omen, with a definite answer).

Normal 0-25 decibels, there are the following conditionsThe standard of normal ear hearing is divided according to the World Health Organization's Classification of Hearing Impairment (WHO) Classification Criteria, there are the following conditions:

The criteria for hearing in a normal ear according to the World Health Organization's Grading of Hearing Impairment (WHO) are:

Normal 0-25 dB No or only mild hearing problems, able to hear whispers.

Mild 26-40 dB Able to hear and repeat normal conversations at a distance of 1 metre may be considered for hearing aids.

Moderate 41-60 dB Ability to hear and repeat loud conversations at a distance of 1 metre usually requires hearing aids.

Severe 61-80 dB When shouting loudly, you can hear some words, and you need to wear a hearing aid, and if you don't wear a hearing aid, you need to rely on lip reading and hand gestures.

Extreme》80 dB Even when shouting loudly, speech cannot be heard or understood, and hearing aids may help understand language (depending on the level of language resolution), with additional ** and sometimes a combination of lip reading and gestures.

Ten behaviors that affect hearing.

Check it out for yourself. Noise, genetics, normal aging.

Keep away from noise and avoid prolonged exposure to high noise. Prevents the sensory cells in the inner ear from being further harmed.

Sudden hearing loss.

Go to the hospital immediately to seek help from a doctor, the best time is within 72 hours, and there is a possibility of hearing recovery within a week, the longer the delay time, the less likely the hearing recovery.

Ear diseases. Ear diseases such as perforated eardrum, otitis media, Meniere's disease and other ear diseases can lead to hearing loss, so you should actively cooperate**, don't wait for the condition to be serious before you want to intervene, then I am afraid that it will be too late to regret it.

Taking ototoxic medications or chronic medical conditions.

Stop taking ototoxic drugs immediately and ask your doctor to switch to an equivalent drug that does little or no harm to your ears.

Bad habits.

Strive to change living habits, ensure regular work and rest time, reduce the number of late nights by combining work and rest, and insist on doing ear exercises every day.

Poor eating habits.

Gradually reduce your intake of alcohol and tobacco, preferably abstaining. The kidneys open up to the ears, eat more black foods that are beneficial to the kidneys, such as black sesame seeds, black rice, and black beans.

Cerumen embolism or foreign body blockage.

Pay attention to ear hygiene, and if you find cerumen or foreign body blockage, please go to the hospital for treatment in time.

Incorrect behavioral habits.

Don't pick your ears with sharp objects, blow your nose with the correct posture.

Anxiety and stress.

Maintain a good attitude, avoid irritability or anxiety, get in touch with nature, relax and let yourself go.

Choose the right hearing device for you.

It is generally believed that patients with mild hearing impairment or above who cannot recover should choose their own hearing aid equipment for hearing compensation according to the degree and nature of hearing loss, as shown in the table below. The earlier you intervene, the more assistive listening solutions there are, and the better the hearing aids.

I hope mine is helpful to you, and I wish you a happy life and all the best.