[ via Mail Online ] 24 Dec
Millions of commuters risk hearing damage because they have set the volume level too high on their MP3 players.
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Sonic Assault (Photo: Lower the Boom) |
Occupational health experts found nine out of 10 people using public transport were exposed to excessive noise through listening to loud music through their headphones, rather than from the environment.
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Noise Thermometer |
For comparison, the average speaking level is 60 decibels, a busy street corner is 80, a circular saw is 90, a baby crying 115. The threshold for pain is about 125, and even a brief, one-time exposure above that level can cause permanent hearing loss
Read more: Mail Online
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