Elvex Impulse foldable ear muff is equipped with noise suppression and communications circuitry. Users are getting impulse noise (such as gun fire) suppression, while the electronic circuitry enhances weak sounds, such as an instructors voice. An impulse filter activates in four milliseconds.
Sounds exceeding 82 dB are suppressed by a gain limiter. Also, any remnant of an impulse sound that is sent through the circuitry will be subjected to the gain limiter.