Verizon SCHu320 用户手册

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页码 174
127
Individual susceptibility to noise-induced 
hearing loss and potential hearing 
problem varies. Additionally, the amount 
of sound produced by a portable audio 
device varies depending on the nature of 
the sound, the device settings, and the 
headphones that are used. As a result, 
there is no single volume setting that is 
appropriate for everyone or for every 
combination of sound, settings and 
equipment. 
You should follow some commonsense 
recommendations when using any 
portable audio device:
• Set the volume in a quiet environment and 
select the lowest volume at which you can 
hear adequately.
• When using headphones, turn the volume 
down if you cannot hear the people 
speaking near you or if the person sitting 
next to you can hear what you are listening 
to.
• Do not turn the volume up to block out 
noisy surroundings. If you choose to listen 
to your portable device in a noisy 
environment, use noise-cancelling 
headphones to block out background 
environmental noise. By blocking 
background environment noise, noise 
cancelling headphones should allow you to 
hear the music at lower volumes than when 
using earbuds.
u320.book  Page 127  Friday, April 9, 2010  4:44 PM