Term: Calibration 

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Configuring a device to accurately represent a known value.

  1. Calibrated monitoring involves measuring the loudness of your speakers with an SPL meter and ensuring that work is done at a known volume level. For instance, film mixing studios have monitor systems calibrated so that pink noise at -18 dBFS produces 85 dbSPL at the listening position.
  2. Meter calibration ensures matching gain structures between analog and digital devices. For instance, professional audio line level (+4 dBu) should produce an analog meter reading of 0 VU and a digital meter reading of -18 or -20 dBFS.