"Hearing loop systems solve the problem of undesired distraction by amplifying only the desired sound."
Not a hearing loop!. A hearing loop uses Faraday's Law of Induction to send a magnetic signal to the activated T-coils inside the person's hearing aid or cochlear implant wirelessly from the hearing loop installed in the room's floors or ceiling. The gate announcement or other important notification is sent directly to your ear where your hearing aid is turned into a personal loudspeaker. In fact, if you are wearing a hearing aid, you'll be able to hear the announcement BETTER THAN THOSE AROUND YOU!