Eli5: Why do earplugs max out at 33db of noise cancelling?
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The point of earplugs is to reduce hazardous levels of noise/sounds to a volume that’s not hazardous. It’s not going to eliminate noise. Reducing to about 70-80 dB prevents the noise hazard risk. Like sun protection doesn’t remove the sun, just reduces the risk of burn (skin damage).
I am an audiologist.
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