World Health Organization (WHO) advises people to limit the time listening to music one hour a day for hearing protection, while the 1.1 billion adolescents and young people are at risk of permanent damage to hearing, listening to music " too much, too much. "
According to a WHO report, audio players, concerts and bars are "a serious threat" forward bbc.com.
Figures released by the WHO show that 43 million people aged between 12 and 35 years suffer from hearing loss and the incidence of this problem is increasing.
In the age group mentioned, according to WHO, half of the people in rich and developing were exposed to dangerous levels of sound volume produced by the personal music playback devices.
Also, 40% of their population has been exposed to dangerous levels of noise in bars and clubs.
The proportion of American adolescents suffering from loss of hearing acuity increased from 3.5% in 1994 to 5.3% in 2006.
"What we are trying to do is to raise awareness about an issue which is not discussed enough, but has the potential to cause damage that may be otherwise easily preventable," said BBC Doctor Etienne Krug, director for preventing injuries in the World Health Organization.
"Besides the fact that it is important that the volume is kept at low levels, limiting the use of personal music devices to an hour a day could help a lot in reducing noise exposure," the WHO said in the report.
"This is a general advice is not calculated by the minute, but it is useful to make them think about those who spend ten hours a day listening to music from an mp3 player. But even an hour can be too much if the volume is too high, "Krug said.
The sound is stronger (measured in decibels, dB), the faster it affects hearing.
Safe time limits obedience, according to WHO, are: 85 dB - noise inside a car - eight hours, 90 dB - lawnmower - two and half hours, 95 dB - noise averaging a motorcycle - 47 minutes, 100 dB - horn noise or metrou- 15 minutes, 105 dB - mp3 player at full volume - four minutes, 115 dB - very loud rock concert - 28 seconds, 120 dB - noise of vuvuzelas or sirens - nine seconds.
The World Health Organization recommends, as a general rule, maintaining sound volume of a music player at 60% of capacity.
For people who want to isolate the noise while traveling by train or plane, WHO recommends the use of external noise canceling headphones and allow the music to be heard clearly at a lower volume.
WHO also recommends the use of earplugs in noisy concert halls and taking "breaks silence". In addition, music fans should stay out of the speakers at concerts.
"But what is the point in going to a concert where the audience will avoid music?" Asks bbc.com.
"We realize that it is a problematic situation that we can compare with alcohol, so that many risk factors for getting pleasure can not be changed easily, but we must make people aware of this," said Krug.
In addition to the call to personal responsibility of the individual, the WHO says that governments and manufacturers have a responsibility.
The organization says that clubs should provide quiet spaces and provide free earplugs, headphones manufacturers should set limits on the volume, and governments should adopt stricter laws.
"When it comes to listening to music at high volume for each volume increase of three decibels, to be safe, the listener should halve during listening. For example, 88 dB, exposure is considered safe for four hours at 91 dB, two hours, and so on, "said Paul Breckell, chief executive of the charity Action on Hearing Loss, which works to prevent hearing loss problems.
"I urge music lovers to think about long-term risks of listening to music with a MP3 player safe at high volumes above 85 decibels, because overexposure can trigger tinnitus (tinnitus, aural sensation characterized by pathological noises , vâjâituri ears without an external stimulus, no), and take into account that a pair of headphones with noise cancellation fruncţie can make a big difference, "said Paul Breckell.
Source: descopera.ro
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