miniDSP Ltd, Hong Kong /
www.minidsp.com
/ Features and specifications subject to change without prior notice
42
8.3
P
LUGIN DESIGN
/
CONFIGURATION GUIDE
The DDRC-88BM plugin is an extremely powerful and flexible tool. To understand how to utilize it effectively, it
is important to understand how test/measurement signals are injected into the signal processing flow.
The diagram below shows the signal flow diagram with a red arrow at the point where the Dirac Live test signal
is injected. This occurs on the
Measurements
tab of Dirac Live Calibration Tool (DLCT). Thus, the signal received
at the microphone will include the effects of the Mixer, the output channel processing, the speaker, and the
room. Dirac Live will calibrate for the effect of all of these.
Shown on the diagram in blue is where the test signal is injected if using an external measurement program
(such as REW). In this case, the test signal passes through all of the processing blocks, including Dirac Live.
Therefore:
•
If using an external test signal to set up the output channels in applications like active speakers, the Dirac
Live filters on that preset must be unloaded (dragged onto the trashcan icon).
•
If using an external test signal to accurately set up bass management, this must be done after Dirac Live
calibration, and on the same preset.
In summary, the best general approach to configuring the DDRC-88D with the enhanced/bass management
functionality is as follows:
1.
Use the plugin to configure the output channels. In designing an active speaker, this may mean locating the
speaker to minimize the effect of reflections.
2.
With the speakers and subwoofer(s) positioned in their final location, perform a Dirac Live calibration (as
described in Sections 5 and 6).
3.
Use the plugin to configure bass management (if required).
