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Continuous exposure to loud sounds can cause permanent damage to the ears

Continuous exposure to loud sounds can cause permanent damage to the ears

Noise by definition is a disturbing sound. Most of the sounds that irritate us are not loud enough to hurt our hearing. What we should take into account is the volume of the sound and the time during which we are exposed.

We measure the sound level in decibel (dB), a logarithmic scale. This measure was chosen to best represent how our ear perceives sounds in a non-linear fashion. A sound increase of 10dB, for example from 100dB to 110dB, is perceived as twice as intense.

Our ear picks up sounds from 0dB, and a normal conversation rotates around 60dB. A study was conducted at the time of the South African Cup to test the most popular sound instruments among the twisted ones and found the sound level of each:

  • Vuvuzela: 127 dB
  • Horn: 123.6 dB
  • Pandeiro: 122.2 dB
  • Judge's whistle: 121.8 dB
  • 2 fans chanting: 121.6 dB
  • Gas horn: 121.4 dB.

At levels above 100dB, only 3 minutes are already enough for damage to the cells of the ear

Exposure to explosive sounds, such as fireworks and firearms, even for a short period of time, can also cause a situation called acute sonic trauma. In this case, the impact on the cells of the hearing leads to a hearing loss, which can be transient or permanent. If the individual already has a hearing loss or has chronic health problems, the chance of permanent loss rises.

Constant exposure to noise can lead to chronic problems. This effect is known as noise-induced hearing loss (NIHL). PAIR commonly affects workers exposed to intense and continuous levels in the work environment, such as in factories and construction.

At the beginning, hearing loss is observed at the end of the day, with recovery after hours of rest. If the exposure continues, a progressive and irreversible hearing loss is established.

The number of hours sufficient to generate hearing loss depends on the sound level in decibels. Exposure to 80dB levels is safe for up to 8 hours. At levels above 100dB, only 3 minutes are enough for damage to the cells of the ear. Auditory monitoring can make early diagnosis and indicate worker protection measures, such as personal protective equipment (PPE).

Pay attention to symptoms

The most frequent signs of noise-related hearing damage are pain ear, tinnitus, irritation with loud sounds, and reduced hearing ability. The nuisance can be great enough to cause headaches and psychological effects. If the hearing loss is significant, the individual may become socially isolated due to the difficulty of communication.

If after exposure to very loud sound the person feels discomfort in the ears, buzzing or reduction in their hearing capacity, they should seek a professional in the area. The audiometry examination can diagnose acoustic trauma. The faster you start the treatment, the better the results.

Take care!

We should avoid being close to sound sources such as speakers and fireworks. Be careful of the volume of the headphones, especially if you are in a noisy environment such as the gym rooms, where we tend to increase the volume even more. Communication is a part of our lives, so keep your hearing!


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