Difference Between Infrared & Radio Frequencies
There are two different ways to broadcast the interpretation signal for delegates to hear through their receivers.
An infrared (IR) System uses light-emitting transmitters which allows the signal to be heard only by infrared receivers within the room in which it is broadcast, making it a very private and secure system to use for sensitive information discussions and meetings. There are up to 32 channels available for different languages with this system.
A Radio Frequency (RF) System uses FM radio frequency transmitters which allow the signal to be heard by RF receivers. There are up to 6 channels/frequencies available for different languages with this system.
The sound from the presenter’s/speaker’s voice is picked up by various microphones (1) in the room, processed through the control unit (2), and the microphone control (3).