Ensemble Designs 9670 Audio Automatic Gain and Loudness Control and 9690 Audio Compliance and Monitoring Software - Manual (Page 10)

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Avenue 9670 - page 10
LevelTrack™ Audio Loudness Control AGC Software Option
Aud AGC Menu
The following is a detailed description of the LevelTrack Audio Loudness Control AGC controls and
how they are used:
AGC Master
• Off – When set to Off the LevelTrack Loudness Control AGC functions are turned off. At the
moment that LevelTrack Loudness Control is switched off it will smoothly reduce the gain or
attenuation (if any) that it had been applying.
• On – When set to On, the LevelTrack Loudness Control system engages. It will use the measured
dBFS or LKFS of the incoming signal to determine how much gain or attenuation should be
applied.
Final Gain
This status indicator shows how much correction, either gain or attenuation, the LevelTrack Loudness
Control system is applying.
Silence Limit
0 to -70, factory set to -40 LKFS.
Use this control to establish the value for what is considered to be silence. For example, when set to
the value of -40 LKFS, levels that are at and below that value are treated as silence.
Target Level
0 to -50, factory set to -24 LKFS.
The Target Level setting establishes the target output audio level. The LevelTrack Loudness Control
AGC function will automatically apply gain or attenuation to the signal to bring it within the range
defined by the Target Level and the Spread.
Note: LKFS is interpreted as the inverse of Dialnorm. For example, if your goal is to output
Dialnorm 24, set your Target Level at -24. For more detailed information regarding
Dialnorm and the Calm Act, see “Ensemble White Paper on Dialnorm - Broadcaster
Compliance with the Calm Act” on page 20.
Spread
0 to 50, factory set to 1 LKFS.
Set the Spread from x to x. The Spread indicates how far above and below the Target Level you want
to allow the AGC to go. A typical setting is 1. If, for example, the Target Level is set at -24 LKFS, and the
Spread is set at 1, the AGC will aim to keep the output signal between -25 and -23 LKFS.