Simultaneous interpreting requires specialised technical equipment including: Soundproof booths: The booths are designed so interpreters can work in a quiet and distraction-free environment. Interpreting consoles: Interpreting consoles are the interface between the interpreter and the audio system. Interpreters use these consoles to listen to the speaker and transmit their interpreting to the audience. Audio system: The audio system includes microphones for the speakers and loudspeakers for the audience. Headphones and receivers: Headphones enable event participants to listen to the interpreting without interfering with the sound of the speaker. Radio frequency transmitters: Radio frequency transmitters send the interpreting signal from the booths to the headsets of participants.