I'm sure this has been covered elsewhere, but yes, and much better than ANR
Especially for doors off ops, where ANR simply can't cope with the overpressure/wind noise, but CEP knows no difference and still copes nicely. A well fitting helmet is also essential too, in order to maximise the overall noise attenuation.
I wish something similar had been available 20 years ago to protect my hearing when it was a bit younger
