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Measure Loudness with Oculus Loudness Meter

End-of-Life Notice for Oculus Spatializer Plugin
The Oculus Spatializer Plugin has been replaced by the Meta XR Audio SDK and is now in end-of-life stage. It will not receive any further support beyond v47. We strongly discourage its use. Please navigate to the Meta XR Audio SDK documentation for your specific engine:
- Meta XR Audio SDK for Unity Native
- Meta XR Audio SDK for FMOD and Unity
- Meta XR Audio SDK for Wwise and Unity
- Meta XR Audio SDK for Unreal Native
- Meta XR Audio SDK for FMOD and Unreal
- Meta XR Audio SDK for Wwise and Unreal
This documentation is no longer being updated and is subject for removal.
The Loudness Meter continuously monitors the selected audio interface to compile an overall loudness profile for your app.
The loudness computation begins as soon as the Loudness Meter detects an audio signal stronger than -70 LUFS. The longer you monitor your audio, the less fluctuation you will see in the integrated LUFS.

Measuring Rift loudness

Rift apps should not exceed the loudness target of -18 LUFS. The observed LUFS value turns red if this threshold is exceeded.
  1. Start your Rift app.
  2. Set the app audio volume (if any) and Rift audio volume to 100%.
  3. Start OculusLoudnessMeter.exe.
  4. On the Options menu, point to LUFS Threshold Target, and then click -18 (Rift).
  5. Play a typical scene or level.

Resetting the Meter

Click RESET to discard the current loudness measurement and start over. Keep in mind that integrated LUFS are not calculated until the audio signal is stronger than -70 LUFS.

Measuring Momentary Loudness

Right-click the contents of the Loudness Meter to toggle momentary loudness measurement mode. This mode uses a 400ms time interval for calculating loudness, and is therefore good for observing peaks in the audio mix while the audio is being analyzed.
You may switch freely between momentary and integrated loudness measurement modes. Switching to momentary mode does not affect the integrated loudness that is continuously calculated in the background.
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Virtual reality / Meta Horizon
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