ISP Immersive Sound Processor
25
Dirac Live®
Dirac Live is a highly advanced calibration tool
which uses sophisticated mixed-phase filters
to compensate for loudspeaker and room
deficiencies in order to provide optimal acoustic
performance of your theater.
The Dirac Live® tool (3.0.8 used for this manual
and onward) is free of charge and available on
Dirac Website after registering (https://live.dirac.
com/register/) and the calibration kit is usually
purchased by the installer through their dealer.
Stormaudio ISP CORE 16 comes by default with
the activation of Dirac Live® and optionally with
the Bass Control add on module which adds to
the standard Dirac Live room correction suite
the ability to also include the bass management
with any number of subwoofers used in the
installation. This is enabled automatically in the
tool once the ISP connection is confirmed.
All Theaters, zones, and child theaters can be
calibrated with Dirac Live.® Presuming you have
a calibration kit, prepare your ISP for calibration
by following the steps below.
1. Define Speakers
For each theater or zone you will calibrate
using Dirac Live® (except Headphones and
Downmix), ensure that you have correctly
defined each speaker’s Size/Filter, multi-way
parameters or manual equalization (refer to
“Channel EQ” on page 19).
In case you decide to calibrate the
subwoofers manually, you also have to define
the Bass Management parameters such as
Frequency and Slope (see “Individual Channel
Adjustments” on page 16) as this won’t be
possible to do so after the Dirac calibration
process unless you duplicate the Profile.
In case you want to use the bass management
capabilities of the Dirac Live tool, being the
Upmix mode or the Full Bass Optimisation
mode that will be described in the next
pages, you can skip the bass management
adjustments and move to the next step.
2. Download and install Dirac Live® 3.x
Calibration Tool Software
You can download a Mac or PC version of
the software at https://live.dirac.com/my-
account-download/ or on the StormAudio
Client Portal (www.stormaudio.com).
Install the software on the laptop you will
use to calibrate the ISP. Use the Dirac account
credentials to log in the tool.
3. Prepare Calibration Hardware
StormAudio recommends using the UMIK-
1 USB microphone that is part of the
Microphone Mini Kit available in StormAudio’s
catalog, other hardware may be compatible
with the Dirac Live® Calibration Tool. This
guide will only cover UMIK-1 use case.
Connect the UMIK-1 to your laptop. Note
the serial number on the microphone and
navigate to https://www.minidsp.com/
products/acoustic-measurement/umik-1.
Enter the serial number to obtain your unique
calibration files.
4. Choose Theater or Zone to Calibrate
From the Main Speakers (A) menu in the ISP
web UI, EDIT (B) the theater or zone you wish
to calibrate.
5. Select Base Profile
Select the profile which will serve as the
basis for your Dirac Live® calibration from the
dropdown menu.
6. Setup Dirac Groups
Group separate elements of a single active
loudspeaker together e.g. Low, Mid, and High
components should be in a single Speaker
group with the same index.
Depending on your bass management
preference between fully automated through
Dirac or manually adjusted with your own
tool, the declaration of the subwoofers will
be different. For manual bass management It
A
B
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