An audience at a performance

Infrared systems

As with a loop system the input source might be microphones or a feed from your sound desk.  This signal then passes through a modulator, to the radiator, through the air and on to the head sets.

The modulator works in a similar way to a domestic radio.  It converts the input into an FM frequency modulation which means that the signal can then be transmitted through light.  The receiver converts the signal back into audio.


Now go to: Placement of radiators