主題:Headphone


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Headphones seem to be getting smaller and smaller. But are the ones that sit inside you ears 44 for you than traditional ones that sit over you ears?   They can be,  45  your music is too loud.  Earphones pushed into the ear are going to deliver a greater sound pressure level compared 46   normal ones. And this could increase the risk of damage.     If you hear ringing in your ears or things sound muffled 47   listening, you’ve overdone it. Usually the problem subsides, but listening to loud music regularly, with any type of headset, could  48 permanent hearing loss. Recent research suggests limiting use to an hour or less per day at no more than 60% volume for over-the-ear styles-and even less for ear-buds. Never sleep with them on. 

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