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Downloading The Microphone Calibration File
Every high quality maeasurement microphone includes a calibration file which is used by the
measurement software to correct for variations between individual microphones. When you
run the Dirac Live software, and select which microphone to use, you will be asked to select the
calibration file associated with it.
Your activation e-mail will include a link where you can download the calibration file for the
calibrated microphone we provide. We suggest that you download this file and save it in a
location on your computer where you will be able to find it easily. On Microsoft Windows
computers you may simply save this file to the Windows Desktop.
If you choose to purchase a different calibrated microphone, it will include its own calibration file,
so be sure to save or copy that file to a location where you will be able to locate it easily.
Preparing To Run Dirac Live
Connecting Everything Together
Before running the Dirac Live software to calibrate your system you must ensure that everything
is connected to your network and is operating properly. Refer to the section entitled Connecting
Everything To Your Network for details.
•
Your processor should be connected to your network and turned on.
(We suggest that you select an unused or inactive input.)
•
Your computer should be connected to your network and turned on.
(We assume you have already downloaded and installed the DIiac Live software.)
•
Your microphone should be plugged into your computer via the included USB digitizer cable.
•
The Emotiva Dirac Network Interface box must be connected to your network and running.
Note: The Emotiva Dirac Network Interface box is actually a fully functional Raspberry Pi
computer, running its own custom software, which facilitates communications between
the Dirac Live software on your computer and your processor. EACH TIME THE NETWORK
INTERFACE BOX IS POWERED ON IT WILL AUTOMATICALLY GO THROUGH A BOOT-UP
SEQUENCE, WHICH WILL TAKE ABOUT TWO MINUTES, BEFORE IT IS READY TO OPERATE. WHEN
YOU ARE DONE WITH A CALIBRATION SESSION YOU WILL BE ASKED TO SHUT DOWN THE
NETWORK INTERFACE AND UNPLUG IT FROM ITS AC POWER.
If you fail to unplug the Network Interface box after issuing it the ShutDown command, or if
you simply fail to shut it down, and there is an AC power fluctuation, the Network Interface box
may end up in a state where it is powered on but NOT running. IF THIS HAPPENS, THE NETWORK
INTERFACE BOX WILL NOT WORK, AND YOU WILL BE UNABLE TO PERFORM A DIRAC LIVE
CALIBRATION, UNTIL YOU RESTART AND REBOOT THE NETWORK INTERFACE BOX.
To Reboot the Network Interface box, simply remove AC power from it by unplugging the AC
adapter from the Network Interface box, leave it disconnected for about thirty seconds, then
plug it back in. It will then take a minute or two for the Network Interface box to reboot itself
and be ready for normal operation. (You will observe a lot of flickering of the status LEDs
during the boot-up process.)
Preparing To Run Dirac Live
Page 11
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