Audio induction loop

The benefit is that it allows the sound source of interest – whether a musical performance or a ticket taker's side of the conversation – to be transmitted to the hearing-impaired listener clearly and free of other distracting noise in the environment.

[6] Typical installation sites include concert halls, ticket kiosks, high-traffic public buildings (for PA announcements), auditoriums, places of worship, courtrooms, meeting rooms, and homes.

In Europe, the EMC Directive applies, and it is also illegal to supply or install unsuitable electronic and electrical equipment.

By setting the amplifier characteristic between voltage and current mode, the overall performance is optimised for good bandwidth with minimum distortion.

An objective of the field strength requirements of standards for AFILs is to make the perceived loudness of sound from the loop the same as from the microphone in the hearing aid.

[11] This standard specifies long term average field strength with allowance for program peaks, background noise level, and frequency response.

The standard recommends fixed and portable monitoring devices to allow verification of the proper operation of the hearing loop.

In the United Kingdom, as an aid for disability, their provision, where reasonably possible, is required by the Equality Act 2010 and previously by the Disability Discrimination Act 1995,[12] and they are available in "the back seats of all London taxis, which have a little microphone embedded in the dashboard in front of the driver; at 18,000 post offices in the U.K.; at most churches and cathedrals", according to Prof. David G.

[7] In the United States, an alternative technology using FM transmission to "neck loop" receivers was more widely adopted due to economic advantages.