Simultaneous interpreting requires (1) appropriate equipment for the interpreters. This includes, at a minimum interpreters headphones, microphones, amplifiers, control consoles, and a booth (fixed or mobile) that meets ISO standards of sound insulation, dimensions, air quality, and accessibility. It may also include risers, video monitors, and other equipment, depending on the venue or application; and (2) appropriate equipment for the participants. This includes transmitters, receivers, headphones or earphones, and any other equipment required by the venue or particular application.