Junger Audio b46 - Digital Audio Leveler - Manual (Page 9)

2. FUNCTION DESCRIPTION
operation manual b46, chapter 2 -Function description- page 2-3
All signal processing is done in the digital domain by Texas
Instruments floating point signal processors. The use of 32 bit word
length for calculation ensures that there is no deterioration in signal
quality, even if an audio signal with a maximum word length of 24 bit is
input into the processing of the unit.
GAIN means linear amplification of input signals. The input gain can
be changed in steps of 0.1 dB , within a range from -15...+15 dB.
Adjustment of GAIN is channel independent.
Level Magic ™ is a unique algorithm to make automated audio levelling
possible.
2.3
AUDIO SIGNAL
PROCESSING
2.3.1
GAIN
2.3.2
AUDIO LEVELLER
LEVEL MAGIC ™
AGC
Input level change
Pic. 2 is showing a
theoretical level change
of +5dB and –5dB
around program level.
Working with AGC
In pic.3 a conventional
AGC is used to adjust
the level. As we can see
the AGC needs a certain
time to react, that is
necessary for mostly
inaudible gain correction.
But that’s too long to get
a proper correction of the
input level change.
Level Magic ™
Level Magic ™ is a
unique combination of a
transient processor and
an adaptive AGC
process. The transient
processor can fill the
lack of level control
against the slow acting
AGC. The total gain of
Level Magic ™ is the
addition of the gain by
the transient processor
and the gain of the AGC.
adaptive
AGC
Transient
Processor