TC Electronic Broadcast 6000 - Manual (Page 116)

MDX 5.1
112 System 6000 MKII Algorithms
Input Output
L
E1
E2
E3
E4
L
R R
C C
LFE LFE
SL SL
SR SR
Xt
MDX 5.1 algorithm – main page
MDX 5.1 algorithm – main page
Input Gain Normalizer
Main Channels + LFE
Range: -18 dB to +18 dB
As we process in a 48 bit domain both positive
and negative gain normalization can be per-
formed prior to low level processing and output
limiting. These gain controls therefore operate in
a safe location, well protected from generating
output overloads.
Setup
Reference Level
Range: -24 dBFS to 0 dBFS in 0.5 dB steps
This parameter sets the reference level in the al-
gorithm. The reference level is the level at which
the Threshold parameters will start operating
when set to 0 dB.
E.g. if the Reference Level is set to -18 dBFS (of-
ten referred to as 0 dBu), a Threshold setting at
-4 dB, will cause the Compressor to start oper-
ating at -22 dBFS.
DXP Defeat Level
Range: Off to -3 dB
MDX 5.1 may remove low level gain below the
threshold set with this parameter to avoid having
irrelevant sources (e.g. background noise) be-
come audible. Low level gain is not revoked if the
DXP Defeat Level parameter is set to Off.
The Defeat threshold is relative to DXP Band
Thresholds, which are relative to Reference Lev-
el.
Example: If Reference Level is set at -20 dBFS,
Band Thresholds at -15 dB, and DXP Defeat
at -22 dB, low level boost starts rolling off at
-47 dBFS. See example at page 18.
Crest
Range: Peak, 6 dB, 10 dB, 12 dB,
14 dB, 16 dB, 20 dB, 24 dB, RMS
Select compression method between RMS and
PEAK.
The dB steps between RMS and Peak are the
dBs needed for a peak-value to override RMS
measurement.
Nominal Delay
Range: 0 to 15 ms
(<2 ms in 0.1 ms steps. >2 ms in 0.5 ms steps)
Sets the nominal Delay of the signal compared
to the
Sidechain signal. This is also known as “Look
ahead Delay”, enabling the Compressor sec-
tion to become more responsive to the incom-
ing signal.
Lo Xover
Range: Off to 16 kHz
Sets the Cross-over frequency between the Lo-
and the Mid- Expander and Compressor bands
for the five main channels (LFr, RFr, Cnt, LSr,
RSr).
The two Cross-over points are not allowed to
cross each other. Therefore the parameter range