Ensemble Designs 9670 Audio Automatic Gain and Loudness Control and 9690 Audio Compliance and Monitoring Software - Manual (Page 8)

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Avenue 9670 - page 8
LevelTrack™ Audio Loudness Control AGC Software Option
Aud Cfg Menu
Within the Audio Configuration menu, the Meter Mode, Meter Position, and Average Time controls,
discussed on this page, relate specifically to the LevelTrack Loudness Control functionality. For detailed
information regarding the other controls in this menu, please refer to your specific module manual
(7555, 7660 and 7660-XV, 9550 and 9550-XA, 9600 and 9600-XV).
Meter Mode
Select between LKFS and dBFS. This selection determines the method by which the audio is analyzed
and measured, and will impact how Audio AGC behaves.
• LKFS – LKFS (Loudness K-weighted relative to Full Scale) is a loudness amplitude level based on
the ITU-R BS.1770 Loudness Measurement Method. It is a scale for audio measurement similar to
VU or Peak, but rather than measuring gain, it measures perceived loudness. Based on a complex
algorithm, this method takes into account audio processing that increases perceived loudness
without increasing gain. LKFS is the measurement method required to comply with the
Calm Act.
• dBFS – dBFS (Decibels relative to Full Scale) is a more traditional method used for measuring
audio volume. For more information on decibels and dBFS, please refer to the ”Glossary” on page
23.
Meter Position
The Meter Position effects both the Final Average (yellow line) on the AGC chart and the audio input
level for the 9690 Audio Compliance and Monitoring Software. The Meter Position is factory set to
Post.
• Pre (pre-fader) – When Pre is selected, the Final Average (yellow line) on the AGC chart will
not reflect any manual adjustments made in the mixer to the gain level of the channel being
monitored. Similarly, the chart and recording in the 9690 Audio Compliance and Monitoring
Software will reflect the audio input level coming from your source prior to any gain or
attenuation being applied in the mixer.
• Post (post-fader) – When Post is selected, the Final Average (yellow line) on the AGC chart
reflects manual adjustments made in the mixer to the gain level of the channel being monitored.
Similarly, the chart and recording in the 9690 Audio Compliance and Monitoring Software
reflect the audio input level coming from your source after any gain or attenuation is applied in
the mixer.
Average Time
Use this control to set the amount of time used to determine the LKFS or dBFS average. 10 seconds is a
typical setting.
Note: Although the control is labeled ”LKFS Avg Time,” if you have selected dBFS as your
meter mode, the LKFS Avg time control will actually be reflecting dBFS Avg time.