Measures the overall loudness of your app's audio mix. Loudness goes beyond simple peak level measurements, using integral functions and gates to measure loudness over time in LUFS units.
To provide a consistent audio volume experience across all Oculus VR experiences, you should set a target of -18 LUFS for Rift apps and -16 LUFS for mobile apps.
For more information, see the Loudness Meter Documentation and the Audio SDK Developer Guide.