TC Electronic Broadcast 6000 - Manual (Page 106)

MD-4
102 System 6000 MKII Algorithms
convenient place to adjust more or less dynam-
ics processing and Loudness.
Trim offers the same “Drive” approach to level
and Threshold used in classic analog Limiters.
Unlike analog designs, MD4’s 48 bit internal res-
olution prevents resolution and signal/noise ratio
from being sacrificed, because the processing
dynamic range is larger than even the highest
resolution Input would be.
MD-4 algorithm – setup page
MD-4 algorithm – setup page
Setup
Configuration
Range: Stereo, Dual Mono, Stereo MS,
Sum Mono, Left Mono or Right Mono
When set to Stereo, the L and R channels use
the same Delay, Trim, EQ and Multiband set-
tings. Additionally, the L and R sidechains of the
Multiband section are linked.
When set to Dual Mono, the channels can have
different Delay, Trim, EQ, Multiband and Limit
settings. The L and R sidechains of the Multi-
band section are unlinked. Note A and B labels
on meters and channel selectors.
When set to Stereo MS, a stereo input is con-
verted and processed as M and S. Note M and
S labels on meters and channel selectors. This
allows individual Trim, EQ and Multiband pro-
cessing to be applied to M and S elements of
the signal, before it’s converted back to stereo
L/R at the output. In this mode the sidechains
of the Multiband section are unlinked so M and
S elements can be processed completely inde-
pendently.
When set to Sum Mono, a 2 channel or stereo
input is summed with the levels set on the Main
page Trims, at a relative phase of 0 degrees (nor-
mal mono) and 48 bit resolution. The summed
signal can have different processing applied
through the use of EQ, Multiband processing
and Limiting. Note A and B labels on meters and
channel selectors.
L Mono and R Mono provide modes where only
one of the input channels is passed to both out-
puts. The one signal can have different process-
ing applied through the use of EQ, Multiband
processing and Limiting. Note A and B labels on
meters and channel selectors.
The Configuration control affects the routing and
sidechain linking of the 5-band section. Linking
of the Limiter is unaffected by the Configuration,
but is independently set on the Limit page.
Reference Level
Range: -24 to 0 dBFS
This control provides an absolute Reference
Level for the Threshold settings in the Multiband
section. Therefore, it is the level at which the
Compressor starts operating when its thresh-
old is set to 0 dB, see level diagram. When the
5 Band mode is set to DXP, Reference Level is
the level at which the bands hit unity gain, re-
gardless of their Steer and Threshold settings.
See level diagram.
For use in broadcast and film production, nor-
mal Reference Level settings would be -18 dBFS
in some countries, and -20 dBFS in others. For
mastering towards a Full Scale delivery, a set-
ting between -14 (wide dynamic range output)
and -6 dBFS (low dynamic range) would be more
typical.
If you’re working with analog inputs or outputs,
remember to scale the converters to match the
surrounding equipment. Level in the Engines of
System 6000 are always expressed in absolute
digital level, dBFS. Go to the Frame-I/O-Slot
pages to check the analog settings. Examples: If
Level In and Level Out are set at 18 dBu, a Ref-
erence
Level at -20 dBFS will be reached at an analog
level of -2 dBu. If Level In and Level Out are set
at 24 dBu, the same Reference Level setting will
be reached at +4 dBu.