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[万花筒] 【整理】2013-03-15&03-17 高分贝耳机——听力杀手

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[Homework]【整理】2013-03-15&03-17 高分贝耳机——听力杀手

A Story affecting every American family.Here is the question.Are you earphones ruining your hearing. right Now ,tonight ,are millions and millions of American walking around listening to music ,but ensuring they will be not able to hear as well in the  years ahead.Tonight the mayor of the New York says it's time to send out a alarm of ABC  chief medical editor doctor to step in.30 years ago people in their 29 can all the of rustle leaves.The drip of the rain drop,the dabble of children. Now ,For one in five of them , those sounds are gone forever. Normally,lots of people will come in their fifties and sixties with hearing loss.And now that has shifted into people in their thirties and forties.In fact ,Doctor geoge ?? has to tell more and more teens.Their high-pitched hearing is already gone.Designer headphone are big business high ticket must-haves. but for  hearing loss, earbuds may be the most destructive. Some contacts, music devices would produce about 115 decibels of sound. Earbuds at 5 decibels more.85 decibels is where hearing damage starts.Power tools ,89 decibels.A lawn mower107. A jet taking off from  100 feet away, 140.  So how loud is the music? I was out with the decible meter.Coming here and about 95 ,wow.WOW!hundred and nine.omg.Here is what happens inside your ear.When sound vibration hit you ear  ,the problem inside the cochlea fragile hear cells.They turn vibration into sound messages to the brain.Blast the more loud sounds, some wither. If loud sound is brief, they will recover. but if Blast too more or happen too often ,they die ,and they never grow back.IF you get to 100 ,i would limit that to about one hour.My advise? Never go higher than 3 quarters of your top buying.And a couple of hours is enough.




原文
A story affecting every American family. Here is the question. Are your earphones ruining your hearing? Right now, tonight, are millions and millions of Americans walking around, listening to music but ensuring they will not be able to hear as well in the years ahead. Tonight, the mayor of New York says it's time to send out an alarm. And ABC's chief medical editor Dr. Richard E. Besser is stepping in.

30 years ago, peole in their 20s could all hear the rustle of the leaves, the drip of a rain drop, the dabble of children. Now for 1 in 5 of them, the sounds have gone forever.

“Normally people will come in their 50s and 60s with hearing loss. And now that has shifted into people in their 30s and 40s.” In fact, Dr. George Alexiades has to tell more and more teens, their high-pitched hearing is already gone.

(Everybody in the club)

Designer headphones are big business, high-ticket must-haves. But for hearing loss, earbuds maybe the most destructive. Some context: music devices can produce about 115 decibels of sound, earbuds at 5 decibels more. 85 decibels is where hearing damage starts. Power tools, 98 decibels. A lawn mower, 107. A jet taking off 100 feet away, 140. So how loud is the music? I went out with a decibel meter.

--Coming in about 95. 105. Wow, 109.

--Oh my god.

Here is what happened inside you ear. When strong sound vibrations hit your ear, the problem deep inside the cochlea are fragile hear cells. They turn vibration into sound messages to the brain. Blast the more loud sounds, some wither. If loud sound is brief, they will recover. But if it lasts too long or happens too often, they die and they’ll never grow back.

“If you get to 100 decibels, I would limit that to about 1 hour a day.”

My advice? Never go higher than 3/4 of your top buying. And a couple of hours is enough.


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