Description
Deaf loop / switch with induction amplifier for hearing aid wearers
If you wish to equip a switch with BehiG compliance, a deaf loop is required (specifications according to SN EN 60118-4: 2015+A1:2018).
A hearing loop, also known as a HearingLoop, induction loop, induction loop or T-loop, is an assistive listening system that allows people with hearing loss to access facilities. It picks up a sound source and transmits it directly to a hearing aid without background noise. The presence of an induction loop should always be indicated by the sign on the right hand side.
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In recent years, hearing loops have become the standard solution for assistive listening around the world. Because of their advantages and ease of use, people with hearing loss would like to see induction loops used in public places such as shops, banks, post offices, reception desks, ticket offices and door intercoms. Advocates call for the use of a hearing loop in all of the above places.
The operation of an induction loop is quite simple:
- A sound source, in this case the voice of an employee, is recorded with a directional microphone near his or her mouth.
- The sound signal is then transmitted to an audio induction loop amplifier, which generates a current to transmit the signal to an induction loop, usually consisting of several turns of copper wire.
- The copper wire induction loop is (usually) located under the front panel switchboard and generates a magnetic field.
- The magnetic field is picked up by the telecoil (or T-coil) of the hearing aid of the hearing impaired listener.
The hearing aid adapts the sound to the specific needs of the person. The sound is transmitted directly into the ear canal, without background noise and with the full frequency spectrum necessary for intelligibility.
To use the system, a hearing impaired client simply needs to set their hearing aid to the "T" position. Expensive receivers are not required, and users do not have to ask for a headset that identifies them as hearing impaired.
Hearing impaired customers are not required to use the system.
Hearing loops are a simple technology in themselves, but care (and expert advice) should be taken in their design, specification and installation to ensure that the system meets the international standard and provides optimum benefit to the end user.
Ask us, we will be happy to advise you.
