7847FSEDA Series
Frame Synchronizer and Distribution Amplifier
Page - 54
Revision 0.1
Program IntelliGain
IntelliGain State:
This control allows the user to set the master switch for the IntelliGain
processor,
which is used for the given audio program. Select
Enable
to initiate IntelliGain processing, and select
Disable
to deactivate IntelliGain processing.
Program Leveler
Leveler State:
This control allows the user to activate the IntelliGain
®
audio leveler. The leveler is
used to level each individual audio channel to the target loudness level. Set this control to
Enable
or
Disable,
to activate or deactivate the IntelliGain
®
audio leveler.
Target Loudness:
This control allows the user to set the target loudness level for the given audio
program. The IntelliGain
®
processor will level the audio to this value. The value range is -35 dBFS to
-15dBFS.
Maximum Gain:
This control allows the user to set total amount of gain that the IntelliGain
®
engine
will apply. For example, setting this control to 10 LKFS indicates that IntelliGain
®
is not to add
anymore than 10 LKFS of gain to the audio program, even if the audio program requires more gain to
reach the target loudness level. The value range is 0 LKFS to 40 LKFS.
Noise Floor Threshold:
This control allows the user to set the audio threshold level for IntelliGain
®
processing. Audio levels below this value will not have IntelliGain
®
processing applied. The value
range is -70 dBFS to -40 dBFS.
Hold Time:
This control allows the user to set the hold time for the given audio program. The
IntelliGain
®
processor will wait this period of time to add gain once the level goes below the target
loudness. By selecting
Immediate,
the IntelliGain
®
processor will immediately process incoming
audio. The user can also define the amount of time before applying processing; this range can be set
from
1 – 14 seconds.
By selecting
Adaptive,
the processor will vary the hold time depending on the
content for optimal sound quality.
Program Compander
Compander Profile:
The compander profiles are used to define the dynamic range control of the
compander. There are 5 default profiles.
Film Standard:
This profile is used to compress/expand sporting events, and movies with a large
dynamic range.
Max Boost: 6 dB (below –43 dB)
Boost Range: –43 to –31 dB (2:1 ratio)
Null Band Width: 5 dB (–31 to –26 dB)
Early Cut Range: –26 to –16 dB (2:1 ratio)
Cut Range: –16 to +4 dB (20:1 ratio)
NOTE:
Only the valid programs will be selectable for configuration. The valid programs
are determined by the value of the
Program Configuration Source
control.
NOTE:
If the compander is enabled, it is desirable to set the target loudness parameter to
the range (–31 dBFS to –26 dBFS) and use
Makeup Gain
control to reach the final desired
target loudness level.
