TC Electronic DB4 MKII - Manual (Page 7)

Introduction
English Manual 3
Introduction
The DB4 / DB8 MKII Algorithms Manual contains
information about the processing performed by
DB4/DB8 MKII. For information about setup,
general use, routing and presets, please consult
the
DB4/DB8 MKII Operations Manual .
DB4 and DB8 MKII are capable of running mul-
tiple, independent processors simultaneously.
One such processor is called an
“Engine”. En-
gines may be routed to deal with independent
audio streams, or combined, for instance, to
condition one input stream to different out-
puts, so-called trickle-down processing. Use the
Routing page to define how engines are routed,
and to assign physical inputs and outputs.
For each Engine, you may recall a different “al-
gorithm”. An algorithm is a specific processor,
for instance up-conversion or 5.1 loudness cor-
rection. Most of this manual describes in detail
the different algorithms you may recall into an
engine of DB4 and DB8.
Engine presets are compatible between DB4
MKII and DB8 MKII. MKII units also read Engine
presets from original DB4 and DB8. Finally, pre-
sets based on the algorithm “DTX” are compat-
ible with the stereo processor, DB2.
Channel distribution in
surround algorithms
To best comply with the channel allocation used
by most digital AES format equipment, the Input/
Output channels on surround algorithms are al-
located as follows:
1 Left
2 Right
3 Center
4 LFE
5 Left Surround
6 Right Surround
These channel allocations comply with the fol-
lowing standards:
– ITU Recommendation ITU-R BR.1384, Param-
eters for International Exchange of Multichan-
nel Sound Recordings, 1998
– SMPTE 320 M-1999, for Television Channel
Assignments and Levels on Multichannel Au-
dio Media
– Surround Sound Forum Recommended Prac-
tice SSF-02/1-E-2 (3-5-99), Multichannel Re-
cording Format, Parameters for Programme
Interchange and Archiving, Alignment of Re-
production Equipment.
Grouping the Inputs/Outputs this way ensures
optimal flexibility for further external processing
and archiving, when working on setups following
the above mentioned standards.
It is, however, worth noticing that total routing-
flexibility of physical Inputs/Outputs to Engine
Inputs/Outputs is available on DB8/DB4 via the
Routing page.
Metering in the engine edit pages
For logical channel metering in the various sur-
round algorithms, the meters on the Engine Edit
pages are displayed from left to right in the fol-
lowing order.
– Left
– Center
– Right
– Left Surround
– Right Surround
– LFE
Meters on engine edit pages
We believe that by displaying the meters on the
Engine Edit pages in the same order as your
speakers are physically placed, the most intuitive
metering of channel-levels is achieved.