Comments on Why would hearing muffs be tested against continuous and not impulse noise?
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Why would hearing muffs be tested against continuous and not impulse noise?
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Looking at a new pair of earmuffs that a NRR (Noise Reduction Rating) or 34 DB. However the fine print says that said rating is for continous noise and not impulse (like gunfire).
Why would they be tested that way as a big reason people buy earmuffs is to protect their hearing while shooting?
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Current testing is "is based upon idealized laboratory testing, the NRR can overestimate the protection"
There is some talk about changing the rating system, but in a quick search I don't find anything recent.
Some sources recommend wearing dual protection 'earmuffs and plugs' because the rating on the product, is NOT tested for impulse noises like gun shots.
References
- New Proposed EPA Noise Reduction Rating
- High-level impulse sounds. How well will your hearing protector perform?
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