How do hearing loop systems work?

An induction loop is a cable that circles the listening area. It is fed by current from a loop amplifier. The amplifier receives its signal from a microphone or by means of a direct connection from another sound source, such as a sound reinforcement system. The resulting electric current in the loop produces a magnetic field, which corresponds to the sound. Your hearing aid will pick up this magnetic field if you are sitting within the area of the loop and your hearing aid - or loop listening aid - is switched to the  'T' position. You will need to adjust your own hearing aid for volume.

What is an induction hearing loop system?

A loop system helps people who use a hearing aid or loop listener to hear sounds more clearly by reducing or cutting out background noise. A loop can also be set up with a microphone to help hearing aid users hear conversations in noisy places. In the theatre, a loop can help you hear the show more clearly.

What causes interference?

Some hearing aid users find that they have to turn up the volume on their hearing aid a little when they switch to 'T' but this should not be a problem if the loop has been set up properly. However, even if the loop system works correctly, you might pick up buzzing noises when you set your hearing aid to 'T' because of  interference from electrical equipment such as fluorescent lights, dimmer switches or electric cables.

Are my conversations private?

Although loop systems are generally designed for use within the area of the loop, the loop signal can spill out into other rooms. Walls, ceilings and floors do not block the magnetic waves from a loop. Hearing aid users whose hearing aids are also switched to 'T' and people using a loop listener outside the room may be able to overhear sound or conversations. Rooms that are next to each other, and rooms directly above and below the loop, can be affected. This could be a problem, for example, if a next-door neighbour also uses a loop system, or if you need to have a confidential conversation.

If confidentiality or interference is a problem then  we would recommend an infra-red system.