If I recall correctly the maximum Noise Reduction Rating (NRR) for earplugs and earmuffs is around 30db. You can combine the two for a slight increase in hearing protection but you still hit a limit because of bone vibration.

Is there PPE out there to go even further beyond this? Where would it be commonly used?

  • @numberfour002English
    3•25 days ago

    Except that’s exactly how nose canceling ear phones work.

    Mine work like this: “Got your nose. Neener neener neener.”