Tag: Hearing

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How to get along with the elderly with poor hearing and eyesight?

One day, we will all grow old. We all have to face blurred vision, invisibility, loss of vision, hearing loss and even deafness… Maybe we don’t know that it is how’s world, but we must have family or relatives around us [struggling] in that world, and we don’t know how to help him. The feeling of aging really makes people helpless. Before that age, it is very difficult for us to have that personal feeling, but through some equipment, we can experience the life of the elderly in advance. The following is the personal feeling of a medical worker in a 3A hospital: I had the honor to participate in an experience activity for medical staff. I experienced the feelings Read More …

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Can acoustic weapons be used to kill people?

The Secret of Hell’s Ladder The Biomedical Building at Brown University has an elevator called the “Ladder to Hell”. Once the elevator door is closed, although no what abnormality will be heard, passengers can feel their ears vibrating about four times a second and their bodies vibrating without coats. This is a typical old elevator, with an inner diameter of about 2 m × 2 m × 3 m, a buzzing fluorescent lamp and a curved blade of the fan on the ceiling. All these make it a perfect low frequency acoustic resonator. Even if one takes the elevator to only two floors, one will feel sick and uncomfortable. The power of this fan is not large, but the broken Read More …

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Can the baby in the belly hear the prenatal education and ultrasound examination of parents?

If you ask a pair of happy parents-to-be who have what’s hopes for their babies, although the answers will be varied, [healthy and intelligent] will definitely become the top hot word. Smart, intelligent, intelligent, hearing is the most important feeling in the human body after vision. How is hearing produced? The vibration of an object will produce sound waves, and when the ear receives the sound waves, it will produce hearing. The human ear consists of three parts: the outer ear, the middle ear and the inner ear. The outer ear is the visually visible ear, which is like a small funnel and is responsible for collecting sound stimuli. The middle ear transmits the vibration of sound to the inner Read More …

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Who is more harmful to ears, ordinary earphones or in-ear earphones?

(The above picture shows ordinary earphones; The following figure shows in-ear headphones.) First, the damage caused by listening to earphones belongs to chronic sound damage. The damage of sound to hearing is called noise deafness in medicine. Noise deafness is mainly divided into chronic sound injury and acute sound injury: A. Chronic sound injury: refers to slow sensorineural deafness caused by long-term exposure to noise stimulation. B. Acute sound injury: It is caused by close explosion (such as bomb explosion nearby during war) and is caused by instantaneous exposure of high-intensity impulse noise. II. Noise Intensity and Exposure Time The severity of noise damage to hearing is mainly determined by noise intensity and exposure time. The greater the intensity, the Read More …

bear

Who is more harmful to ears, ordinary earphones or in-ear earphones?

(The above picture shows ordinary earphones; The following figure shows in-ear headphones.) First, the damage caused by listening to earphones belongs to chronic sound damage. The damage of sound to hearing is called noise deafness in medicine. Noise deafness is mainly divided into chronic sound injury and acute sound injury: A. Chronic sound injury: refers to slow sensorineural deafness caused by long-term exposure to noise stimulation. B. Acute sound injury: It is caused by close explosion (such as bomb explosion nearby during war) and is caused by instantaneous exposure of high-intensity impulse noise. II. Noise Intensity and Exposure Time The severity of noise damage to hearing is mainly determined by noise intensity and exposure time. The greater the intensity, the Read More …