Junger Audio d06 - Digital Audio Leveler - Manual (Page 10)

2. FUNCTIONAL DESCRIPTION
operation manual d06, chapter 2 - Functional Description - page 4 of 8
The Level Magic ™ process needs to be setup in three steps
- select one of the default presets for your apllication
(see preset description in chapter 5)
- adjust the operation level and peak level referring to standards that
are used for your application
- if the default preset is not giving satisfying results change the
parameters indivdually
Level Magic ™ is using a unique combination of QP and RMS level detectors
to analyze the incoming audio signal. By comparing QP and RMS
measurement results we can find out how much transients are coming in.
Dependent on that the necessary resulting gain is controlled in relation
between transient processor and AGC.
Transient processor is doing fast gain change and the AGC is doing slow gain
change (depending on settings). The way how Level Magic is acting on the
audio is mostly determined by balancing between slow and fast gain changing
process. The AGC should be set in a way that the gain change is mostly
inaudible (1dB per 5 seconds or slower). The Transient Processor should be
set that incoming level jumps are reduced but originally dynamic range is not
changed too much. As more possible gain by the Transient processor
(RANGE), as more reduction of the dynamic range will be.
SOFT level control:
AGC range …15dB, time >=2min
Transient range …4dB, soft process
MID level control: AGC range …12dB, time >=1min
Transient range …6-8dB, mid process
HARD level control: AGC range …10dB, time >=40sec
Transient range …10dB, hard process
Parameter description:
AGC
OP-level
operation level, target level for the AGC and for
the Transient Processor
Range max. gain by the AGC
Time time to reach the max. gain change
Gate threshold level where the AGC stops gain
change and moves gain slowly to the long
term average gain
Transient Processor
Process a combination of level ratio and release
characteristic for the fast gain change (soft, mid,
hard)
Range max. level change by the Transient Processor
Adjustment
procedure
Process
description
Parameter
description
Transient
Processor
AGC
Level
Detection
Limiter