This is basically the same idea as electronic ear protection of the kind typically used for shooting sports, with the addition of a directional microphone to th

This is basically the same idea as electronic ear protection of the kind typically used for shooting sports, with the addition of a directional microphone to the existing global microphone. It works extremely well in that form factor, basically like having Superman ears. Conversations are audible, you can turn up the sensitivity to where you can hear footsteps clearly in a house, and gunshots are reduced to the level of, eg, a heavy book falling off a shelf. https://smile.amazon.com/Howard-Leight-Amplification-Electronic-R-01526/dp/B001T7QJ9O/ref=sr_1_3?ie=UTF8&qid=1481307350&sr=8-3&keywords=electronic+ear+protection https://smile.amazon.com/Howard-Leight-Amplification-Electro...