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Induction loops

hearing loop symbol

An induction loop (AFILS – Audio Frequency Induction Loop System) is a wire that circles a room and is connected to a sound system that transmits the audio signal to hearing aids via t-coil. It is more commonly known as a hearing loop system or induction loop system. The majority of modern hearing aids include a ‘telecoil’ which can be activated by an audiologist. By switching their device to the ‘T’ setting, users can access the Loop Program. This enables their hearing aid to pick up sound signals from an induction loop.

It can be found in public buildings including banks, shopping centers, post offices, churches and theaters among many more. If a building has a loop system they will display a sign – see above.

Go to for more information about the Loop Assistive Listening – Williams Sound


Please visit these websites for more information about the induction loops: