Induction loop
From Wikipedia, the free encyclopedia
- For the dubbing process of replacing voices for a motion picture, see Automated dialogue replacement.
An induction loop is a simple coil wire transceiver.
One use of an induction loop is in inductive loop detection where the coil is used to detect metal objects. Applications for this include vehicle detection, metal detectors, etc. The principle of operation is a changing inductance which changes the frequency of an oscillator of which the inductive loop forms a part. It is also used in hearing aids for people who have hearing loss (here also known as teleloop).
An anti-submarine indicator loop was also a device used to detect submarine and surface vessels using submarine cables connected to an indicator.
Another use of induction loops is the provision of hearing aid compatible assistive listening for people with hearing loss.
