Induction loop, also called hearing loop, is the most widely used assistive listening technology for individuals with reduced ranges of hearing. Induction loop transmits the sound directly from the audio source (microphone or PA-system) to the hearing device. A good inductio loop system provides clear audibility of the audio source without disturbing noices from the surrounding environment.
Because the sound is not transmitted through the air, it is impossible for a person without a hearind device to detect if the system works as it should or if there are any disturbances which causes problems for the hearing aid users.
Qlu Ltd. has developed an unique measuring and mapping systems to certify the quality of hearing loop systems.