How many decibels is 5 out of 16 volume bars on an iphone with earphones in?

Also, how long should I listen at this volume without causing hearing damage?

The numbers on the volume bar of your iphone don't tell the volume you get at your eardrums.
Question: How long can a person endure a certain noise level before hearing impairment occurs?
"Permissible Exposure Time Guidelines - SPL"
Sound pressure level Lp and permissible exposure time t:
115 dB = 0.46875 minutes (~30 sec)
112 dB = 0.9375 minutes (~1 min)
109 dB = 1.875 minutes (< 2 min)
106 dB = 3.75 minutes (< 4 min)
103 dB = 7.5 minutes
100 dB = 15 minutes
97 dB = 30 minutes
94 dB = 1 hour
91 dB = 2 hours
88 dB = 4 hours
85 dB = 8 hours
82 dB = 16 hours
Lower dBs are said to be harmless

Accepted standards for recommended permissible exposure time for continuous time
weighted average noise, according to NIOSH (National Institute for Occupational
Safety and Health) and CDC (Centers for Disease Control and Prevention).
For every 3 dB sound pressure level (SPL) over 85 dB, the permissible
exposure time is cut in half - before damage to our hearing can occur.
This may not represent a worldwide view of the subject.

Cheers ebs

  • Why does my iPhone 4 have no signal yet has full bars? My phone is on EE and doesn't connect to the internet even though i have full 3g does anyone know why? I've tried resetting it everything and nothing seems to work it does this for about 3 hours a day?
  • Volume on my iPhone 4S doesn't work only when I put the earphones on? Today I tried listening to music on my iPhone 4S, only to find that my volume adjuster had disappeared. And just to clarify, when I say that it disappeared, I mean that when I press the volume buttons on my phone, I see the speaker icon but the gauge bar is gone. When I put my earphones on it works perfectly I tried resetting it but nothing seems to work. I was wondering if I can get a replacement for my phone I have sprint
  • My Iphone earphones keep falling out when running? I have the latest ipod headphones (the ones you get with the iphone 5) and they still always fall out when i run! It's so annoying and i don't want to get specialised earphones unless i really have to… Does anyone else have this issue and how can i fix it?
  • My iPhone 5s volume works when I have my earphones in, but not when I take them out? When I have my earphones plugged in, I can turn the volume up and down as I please, but when I take them out and press the volume buttons, it shows if the volume is up or down, but no sound comes out. How do I fix this?

Add Comment