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Moderator/Admin Dude!
2020 Rapid Red/black 2011 Kona Blue/white
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Discussion Starter #1

942 Posts
So, I’m confused. The GT350R is louder than a GT350 since it comes stock with the resonator delete. So why would they not test is instead.

2014 GT500 Coupe SGM " 1 of 1 "
3,274 Posts
How Loud and How Long
clock with soundwave One way that noise can permanently damage your hearing is by a single brief exposure to a high noise level, such as a firecracker going off near your ear. But hearing damage can also occur gradually at much lower levels of noise, if there is enough exposure over time. To protect your hearing, you'll want to limit your exposure to these moderately high noise levels as well, and give your ears a chance to recover after any period of noise exposure.
For example:
  • At 91 decibels, your ears can tolerate up to two hours of exposure.
  • At 100 decibels, damage can occur with 15 minutes of exposure.
  • At 112 decibels, damage can occur with only one minute of exposure.
  • At 140 decibels, immediate nerve damage can occur.
Firearms, firecrackers, and jet engines taking off are all louder than 140 dB. If you find yourself near any of these without hearing protection, use your fingers and plug your ears! And at the same time, move away from the noise — even a few extra feet can reduce the loudness significantly.
Noise Dose Formula
The generally accepted standard to minimize hearing risk is based on an exposure to 85 dBAfor a maximum limit of eight hours per day, followed by at least ten hours of recovery time at 70 dBA or lower (at which the risk of harm to healthy ears is negligible). Then a "3-dB exchange rate" formula is applied, which means that for every 3 dB above 85 dBA, the maximum exposure time is cut in half.
Noise levels above 140 dB are not considered safe for any period of time, however brief. For children, the World Health Organization (WHO) recommends no exposure above 120 dB.
Maximum Recommended Noise Dose
Exposure Levels

Noise Level (dBA)Maximum Exposure Time per 24 Hours
858 hours
884 hours
912 hours
941 hour
9730 minutes
10015 minutes
1037.5 minutes
1063.7 minutes
109112 seconds
11256 seconds
11528 seconds
11814 seconds
1217 seconds
1243 seconds
1271 second
130–140less than 1 second
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