Induction Loop Systems from Eastern Electronics
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Induction loops for the hard of hearing are now becoming mandatory in many public buildings. Apart from serving as a means of communication, they also support the emergency evacuation protocol of the venue. What is an induction loop? Not all hearing-aid users know the answer. So, the following explanation may be of some help in enabling non-technical persons to understand how an induction loop works.
Most hearing-aids nowadays have a switch marked M and T. Some even have M, MT and T. The M (microphone) position is for "normal" listening, that is, receiving airborne sound via the microphone built into the hearing-aid. The T position is for receiving the sound via an induction coil which is built into the hearing-aid. For the induction coil to provide sound, a magnetic field is set up by a loop of wire or copper foil tape around the area concerned powered from a special loop driver amplifier. In recent years induction loop systems have begun to be provided in public places such as churches, cinemas, theatres and even in the home, where the T facility is used to listen inductively without the interference of airborne background sound. The MT position which is provided on some hearing-aids allows listening simultaneously to both airborne sound via the microphone and inductively transmitted sound via the induction loop.
Why an induction loop? In a noisy environment, or one in which reverberations and echoes are obtrusive, particularly churches, we all find it difficult at times to hear and understand what is said. In such circumstances, a person with impaired hearing, wearing a hearing-aid, can find it almost impossible to hear the speaker clearly. It is for this reason that more attention is now being given to assisting hearing-aid users by installing induction loops in churches, public buildings and in some cases, the workplace.
Eastern Electronics understands the varying requirements that users have and can design a system for use in almost any location. All we need to know are the approximate dimensions of the area to be covered. The system will need a mains power supply and can also be linked into a public address or audio system. The "loop" itself is a single insulated thin wire which runs (usually) at floor level, all around the perimeter of the area to be served. It is powered by a driver amplifier which is fed with sound from a microphone and/or any existing sound amplification system. We are able to recommend and supply suitable equipment for the job which can often be installed by a competent electrician at low cost. We offer guidance at all stages of the project and it is our aim to provide you with a high quality, long lasting system.
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