Junger Audio Transmission processor Level Magic LT - Manual (Page 38)

LEVEL
MAGIC
Introduction & Reference guide LT d06 d07 b46 C8007 C8046 C8086
Parameters of AGC
Transient processor
Limiter & brief description
Parameter Range Description
LEVELLER
Operating Level -40…0dBFS Desired target level for the levelling process. Reference
Level for the Transient Processor and the AGC
AGC range 0…40dB Determines the maximum gain change applied by the AGC.
AGC Range must be bigger then the expected difference
between the average input level and the operating level.
If there is for example an average input level of -23dBFS and
your OP-Level is -18dBFS, the AGC needs at least a range
of 5dB. In most cases an AGC raneg of 10dB is a good
choice
AGC time 10s…2h Describes the time of development for the AGC to reach the
maximum possible gain change (range value).
The ratio of gain change should never be faster then 3
seconds for 1 dB!! We are recommending a setting of 4…5
seconds for 1dB gain change by the AGC. Therefore the
AGC time is basically determined by the AGC range value. A
range setting of 10 dB requires a time setting of minimum 40
seconds.
AGC gate -60… -
20dBFS If the input level falls below this threshold level, the gain
change of the Leveller freezes immediately. After appr. 20
seconds input level below silence gate the current gain
change is slowly moving to the longterm average gain. On
this way background noise is not raised in program breaks.
Transient
program
soft/mid/hard This parameter describes the characteristic of gain change
by the transient processor. It has to be chosen dependent on
your program genre. If there are just a few level changes or
you want to keep the original dynamic range best (e.g.
classical music), you have to choose “soft”. For mixed
program “mid” should be best in most cases. And for live
venues (sport etc.) with frequent unexpected level changes
the adjustment “hard” is required.
Transient range 0…15dB Determines the maximum gain change applied by the
Transient Processor when there are fast input level
changes. Large range values are reducing the dynamic
range, especially in combination with the transient program
“hard”
LIMITER
Limiter Threshold
( Peak Level )
0…-20dBFS Reference Level for the Brickwall Limiter.
The range between the Operating Level and the Peak Level
is the level headroom and should be 6…9dB.
Limiter program 0…9 Characteristic of the limiter, mostly reflecting release of the
limiter reduction. 0 – very fast, 9 – very slow.