One name in ears.....Peltor.
The good ones actually make hearing stuff easier since they amplify everything under a certain Db level.
Even so a regular set of muffs or foam plugs doesn't block out enough to not hear what is going on. A 30 Db reduction is pretty good and I know that just the air going through my dust collector averages about 75 Db.
Joe
JC Custom WoodWorks
For best results, try not to do anything stupid.
"So this is how liberty dies...with thunderous applause." - Padmé Amidala "Star Wars III: The Revenge of the Sith"