Emotiva XMC-1 User Manual page 28

Dirac live
Dirac Live takes the correction process a step further than other, more basic room correction
systems. Because Dirac Live uses mixed-phase filters, it is able to calculate filters that not only
correct the frequency response, but also compensate for errors in time response. This allows
Dirac Live to correct more of the differences between how your speakers perform in your room,
and how ideal speakers, in an ideal room, would sound - and enables Dirac Live to correct both
frequency response and transient response. In simplest terms, because Dirac Live is not limited to
correcting only problems related to frequency response, it does a better job of making your room
sound more like it theoretically should.
In addition to its extensive set of manual adjustment and calibration tools, the XMC-1 includes
Dirac Live for Emotiva - a powerful version of Dirac Live Room Correction optimized to run on the
XMC-1 hardware platform.
Dirac Live is comprised of two modules: the Dirac Live Calibration Tool (DLCT), which takes the
measurements, analyzes them, and calculates the correction filters, and the audio processing
module that applies the correction filters to your music. Every XMC-1 purchase includes a
license for a single-user copy of Dirac Live LE for Emotiva, which provides all the powerful room
correction capabilities of Dirac Live, but offers limited options for user customization. Users who
require the ability to further customize Dirac's operation and target curves will have the option
of upgrading to Dirac Live Full for Emotiva for a small additional charge. Both Emotiva versions of
Dirac Live use the same custom programmed audio processing module, which runs on the DSP
hardware in the XMC-1, and is included as a module in the XMC-1 firmware.
The Dirac Live Calibration Tool is a computer program which can be installed and run on any
relatively current personal computer (system requirements will be found later in this chapter).
Once the Dirac Live correction filters have been transferred to your XMC-1, they are accessed
by simply selecting the Dirac Speaker Preset - which, like the two other Speaker Presets, can be
selected manually from the Setup Menu or the remote control, or associated with specific inputs
in the Setup Menu.
The Dirac Live LE for Emotiva package that comes with your XMC-1 includes the following:
• A single user license for the Dirac Live LE for Emotiva (DLCT) computer software.
• The Dirac Live audio processing module - which is part of the XMC-1 firmware.
• A calibrated test microphone designed specifically to work with Dirac Live for Emotiva.
• A precision USB microphone preamplifier and digitizer module - which enables you to
connect the calibrated microphone directly to a USB port on your computer.
• A desktop microphone stand.
The Dirac Live Full for Emotiva upgrade package includes:
• A single user license for the Dirac Live Full for Emotiva (DLCT) computer software.
see the Dirac live Addendum for detailed instructions about how to install, configure, and use
Dirac live Automatic Room Correction.
Operating the XMC-1
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