A neckloop is one type of loop. It is a necklace-size loop of wire that can be plugged into an ALD or ALS receiver, a radio, TV, some computer speakers and some telephones. It is then worn around the neck of someone who has a hearing aid with a telecoil.
The neckloop generates a weak magnetic signal that can be "heard" by the telecoil and amplified by the hearing aid. A neckloop and telecoil are the interface of choice of many hearing aid users.
A neckloop is convenient because it:
- Can drive both hearing aids (not with true stereo, but with a mono signal into both aids).
- Does not require wires running up the neck to the hearing aid(s), and can even be worn under a shirt or jacket.
Other loops can be used to generate the magnetic signal, too:
Another alternative to a hearing aid's microphone as the input device is the Direct Audio Input (DAI).