Georgia EOPA Audio-Video Technology and Film (AVTF) Level 3 Practice Test

Calibration uses reference signals, specifically tones, to set playback level for the audience. A tone is a precise frequency that engineers can measure and reproduce consistently, so they can adjust the mixer faders to hit a target loudness and ensure the system responds correctly across the spectrum. By playing a known tone and checking the output with a level meter, they can dial in the correct volume reliably.

Background music, floodlights, and gels don’t serve this calibration purpose. Background music is actual content, while floodlights and gels are lighting equipment, not audio calibration signals.