Ecip
Member
- Nov 8, 2015
- 686
- Tinnitus Since
- 4.11.2015
- Cause of Tinnitus
- Still unknown... possibly noise exposure?
These star wars movies are way too damn loud.
Remember, guys, that 30db ear plugs don't actually reduce noise by 30db. The math goes a bit different. If I remember correctly, earplugs with a rating of 32dB actually reduce loudness by 12.5dB.
See this link for examples and an explanation:
www.coopersafety.com/noisereduction.aspx
Remember, guys, that 30db ear plugs don't actually reduce noise by 30db. The math goes a bit different. If I remember correctly, earplugs with a rating of 32dB actually reduce loudness by 12.5dB.
See this link for examples and an explanation:
www.coopersafety.com/noisereduction.aspx
For example, if you are at a rock concert where the level of noise exposure is 100 dB and you are wearing earplugs with an NRR 33dB, your level of exposure would not be reduced to 67 dB. Instead, to determine the actual amount of decibel deduction applied (when decibels are measured dBA which is the most common), you take the NRR number (in dB), subtract seven, and then divide by two. Given the previous example, your noise reduction equation would look like the following: (33-7)/2 = 13. This means that if you are at a rock concert with a level of noise exposure at 100 dB and you are wearing a hearing protector with an NRR 33 dB, your new level of noise exposure is 87 dB. If you are wearing a product with an NRR of 27 it would deduct 10 decibels (27-7/2=10).
*To maximize noise reduction, hearing protectors must be worn properly.