Posts Tagged ‘childbrain0mg’

iPod Hearing Loss Danger

Sunday, December 30th, 2012

Why loud jazz is bad.

See
http://www.time.com/time/health/article/0,8599,1881130,00.html

More detail at:
http://www.noisehelp.com/ipod-hearing-loss.html

Volume Level Maximum Listening Time per Day
50% or below No limit
60% 18 hours
70% 4.6 hours
80% 1.2 hours
90% 18 minutes
100% 5 minutes

add 10% to vol. level for headphones