Induction Loops
An induction loop system helps deaf people who use a hearing aid or loop listener hear sounds more clearly because it reduces or cuts out background noise. In a University/College typical applications are in lecture theatres, where a loop is important to enable the hard of hearing to hear the lecture more clearly. An induction loop is a cable that goes around the listening area. An electric current is fed to the loop by an amplifier that gets its signal from a connection with a source of sound. This can be a sound system, or a microphone placed in front of the person speaking. The resulting current in the loop produces a magnetic field that matches the sound. People with hearing difficulties can then pick up this magnetic field if they are sitting within the area of the loop and their hearing aid - or loop listening aid - is set to 'T'. Hearing aid for volume can be adjusted in the usual way. The provision of an induction loop my be a legal requirement under the Disability Discrimination Act (DDA).
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