| |
Decibels |
Effect |
| No hearing damage |
0dB |
Threshold of
hearing |
| |
10dB |
Sounds hardly
audible |
| |
20dB |
Eardrums pick up
sound wave vibrations |
| |
30dB |
|
| |
40dB |
|
| |
50dB |
|
| |
60dB |
Sounds eardrum is
accustomed to |
| |
70dB |
|
| Government limit
(8hrs.) |
80dB |
After about eight
hours, hearing damage occurs |
| |
90dB |
|
| |
100dB |
Can damage hearing
after 2 hours of exposure per day |
| |
110dB |
|
| |
120dB |
can damage eardrum
after 15 minutes of exposure per day |
| |
130dB |
Several hours can
cause inner ear to fail to convert sound into electrical signals
to be sent to brain |
| |
140dB |
Brief exposure may
cause inner ear to fail to convert sound into electrical signals
that get sent to brain |
| |
150dB |
Pain and damage to
the eustachian tubes (tubes that connect middle ear to mouth) |
| |
160dB |
Immediate hearing
loss, eardrums rupture causing irreversible hearing loss |
| |
|
Note: Information
only filled in where applicable |