This can be caused because of audio playing issues, or because the Pro Tools "Dynamic Plug-in Processing" offloads plugins if they are not processing anything.
Open a sound stream as described in the step by step guide below, starting on step 3.
Turn off Dynamic Plug-in Processing by unchecking the box in Setup → Playback Engine
The Dirac Processor Plugin package requires a plugin host (DAW, Digital Audio Workstation) compatible with VST2, VST3, AAX, or AU plugins. Compatible hosts include but are not limited to:
Logic Pro X
Cubase 10
Studio One 4
Reaper
JRiver Media Center
Ableton Live 10/11
Pro Tools 11 or later
Audirvana
Amarra
The Dirac Live Processor can use any soundcard etc available for playback. USB/HDMI for AVR and SPIDF output for audio (optical or coax).
You can download Dirac Live and Dirac Processor Plugin here. Make sure that your computer is connected to the internet for licensing purposes.
Open the files and follow the installation procedures.
The Processor plugin will be placed in a folder according to the path below, unless you have made changes during the installation process:
Windows
Program Files/Common Files/VST2
Program Files/Common Files/VST3
Program Files/Common Files/Avid/Audio/Plug-Ins
MacOS
/Library/Audio/Plug-Ins/Components
/Library/Audio/Plug-Ins/VST
/Library/Audio/Plug-Ins/VST3
/Library/Application Support/Avid/Audio/Plug-Ins
Start your DAW and locate the audio plugin in the plugin menu. You might need to go through additional steps to activate the plugin, depending on your DAW.
Log in to your Dirac account if not already signed in.
There will be no filter stored in the audio plugin unless you have previously created new filters with the calibration tool.
Press the “play” button in your DAW to ensure that the audio stream is active while connected with the calibration tool. It is important that the audio stream is active during the whole calibration process. Here is a 30 minutes mp3 that you can use.
Make sure that your computer is connected to the internet for licensing purposes.
Please see to that your calibration microphone is connected to the computer running Dirac Live.
Enter your account details in the first screen after launching Dirac Live. Login is required in order to save/restore any project or use purchased features.