Make Listening Safe
What is safe listening?
Safe listening levels depend on the intensity (loudness), duration (length of time) and frequency (how often) of the exposure. These three factors are interrelated and contribute to the overall sound energy level that a person’s ears are exposed to. The total amount of sound energy a person can safely receive is effectively constant. We can be exposed to the same amount of energy at lower volumes listened to over long periods of time as we might receive when louder sounds are heard for a short duration. Permissible levels of daily exposure to noise have been identified accordingly, taking into account the total permissible ‘dose’ of sound. Permissible exposure levels have been calculated for occupational settings and are extrapolated to recreational settings. Eighty-five decibels is considered the highest safe exposure level up to a maximum of eight hours. The permissible time for safe listening decreases as sound levels increase. For example, a sound as high as 100 dB – the level produced by a subway train – can be safely listened to for only 15 minutes each day. The output of personal audio devices may range from 75 dB to as high as 136 dB . The maximum output levels vary depending upon regulations and legislation in different countries. Typically, users of personal audio devices choose to set the volume between 75 to 105 dB. Permissible daily noise exposures At nightclubs, discotheques and bars, average sound levels can range from 104 to 112 dB; noise levels at pop concerts may be even higher. Patrons may expose themselves to the same level of loudness in 15 minutes of music at 100 dB that an industrial worker gets in an 8-hour day at 85 dB. Noise levels at sporting venues have been found to range from 80 dB to 117 dB. The average noise exposure during the Football World Cup in 2010 was as high as 100.5 dB. Even a short duration of exposure to high-decibel levels such as these can be harmful. Habitual exposure almost certainly leads to hearing loss over time. The good news is that noise-induced hearing loss can be prevented by following safe listening practices.Listening
WHO statistics show more than 32 million children around the world are affected by moderate to severe hearing loss, and approximately 60 percent could have been prevented.
use earplugs in noisy surroundings!
get regular hearing check-ups!
once you lose your hearing,it won’t come back!
limite the daily use of personal audio devices!
keep the volum down!