There is some question of the value of ENR (Electronic Noise Reduction)
in avoiding future hearing loss. Our company investigated supplying ENR
headsets in a high noise area, but decided not to, since there was no
demonstrated value. In short, ENR only works on lower frequencies, and
those frequencies typically don't affect hearing as much as higher
frequencies.


.... and smoking hasn't been proven to cause cancer.

If you put them on, and it seems quieter (vs a non ENR set) then it's probable
that there is less noise entering the ear. This probably leads to less damage
(if we accept the premise that noise at that level causes damage).

I find ENR works on the higher frequencies too. I put on my DCs passively and
can still talk to people around me. I flip on the ENR and it's like I've gone
deaf.

My only issue with (DC) ENR is that I get a low frequency warble, probably due
to a poor seal around the earpiece of my glasses.

Jose

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