Who provides traffic/ATC in simulators?
When pilots train in full-motion simulators, who or what provides the other traffic around them (including pilot radio traffic) and ATC? Is it computer-generated, or are there one or more other people to provide ATC and "fly" other aircraft, or do most simulations simply take place in a world without ATC or other air traffic? I know computers can handle accurate simulation of the physical parts of flight, but I suspect they would not be very good at generating spontaneous, realistic voice traffic for the radio, much less understanding the voice of the pilots in the sim.