miniDSP Ltd, Hong Kong /
/ Features and specifications subject to change without prior notice
22
4.3.2
Configuration procedure
The Dirac Live test signal originates in the Dirac Live blocks, so it “sees” the output channel processing
configured by the DDRC-24 plugin. Crossovers or parametric EQ set up in the output channels will affect the
response that Dirac Live measures.
However, if using an external application such as REW (Room EQ Wizard) to help set up the plugin, its test signal
will pass through the Dirac Live blocks
and
the output channel processing. Therefore, the measured response
will be affected by any loaded Dirac Live filters as well as crossover and parametric EQ in the output channels.
The procedure for configuration is therefore as follows:
1.
Configure the output channels and routing matrix first. While some types of configuration, such as
subwoofer integration, can often be done successfully without acoustic measurement, in general it is
best to use acoustical measurement taken with REW or a similar program. For the sake of a concrete
example, let’s say this is done in preset 1.
If Dirac Live filters have been loaded into preset 1, the delay and gain calculated by Dirac Live are still
applied even if Dirac Live is turned off. It’s therefore best to use a preset that hasn’t had Dirac Live
filters loaded at all.
2.
Save the configuration to a file.
3.
Check to make sure that preset 1 is selected. Then start the
DiracLive
application and run a
calibration. When you export the Dirac Live filters, export them to slot 1.
If you wish to set up multiple slots with different Dirac Live target curves, use this extended procedure:
1.
Configure the output channels and routing matrix.
2.
Save the configuration to a file.
3.
Load that configuration file into presets 2 and 3 (for example).
4.
Select preset 1 and run Dirac Live calibration. Export the filter into slot 1.
5.
Change the target curve. Export the filters into slot 2.
6.
Change the target curve. Export the filters into slot 3.
The above is typical for most users. More advanced users may wish to have a different back end configuration in
different presets. For example, you may have a different crossover frequency. The above principles still apply:
each Dirac Live filter should be loaded into a slot that has same back-end processing as when the measurements
were taken.
