Expander; Limiter - junger Accent1 Operation Manual

2. FUNCTION DESCRIPTION
2.3.3
Below an adjustable threshold level an expander can be activated which can lower the amout of noise
signals. Range parameter describes the maximum attenuation within 6dB input level change below
threshold level.
input
threshold
level
-20...-60, off
OFF
range
0...40 dB
gate
2.3.4
The static characteristics of the ACCENT2
usually refers to a digital output level of 0 dBFS
(dB Full Scale). This is useful for
applications of the dynamics processor as the
on-following digital
supposed to be balanced down to the final bit.
For applications using headroom the output
level of can be adjusted within 0 ... -20 dBFS
in steps of 0.1 dB.
determines the maximum output level but the
limiter threshold also determines
reference level for the compressor. The static
characteristics of the compressor are related to
the limiter threshold.
input

limiter

threshold
0...-20dBFS
audio processing of
compressor is related
to limiter threshold level
page 2-4 operation manual accent2, chapter 2 -Function description-
-60 -50 -40 -30
most
recording system is
The limiter threshold
the digital
-60 -50 -40 -30
max. output
level
-20 -10 [dBFS]
-10
6dB
-20
-30
-40
-50
output
The static characteristics fo limiter (solid) and
compressor (dotted) at a limiter threshold of -
12 dBFS are illustrated in fig. 7.
For the dynamics functions a signal delay of
approx. 2 ms is built in. This delay makes it
possible to arrange the algorithm of the limiter
in such a way that the control mechanism is
activated before maximum level is reached
(look ahead limiter). Within the rise time of the
signal the peak level is recognised and the
maximum is calculated in such a way that full
scale level is reached precisely without
causing clipping.
-20 -10 [dBFS]
-10
-20
-30
-40
-50
output

EXPANDER

fig. 2-2:
static characteristics:
expander
LIMITER
fig. 2-3:
basic function:
limiter