*Start DiracLiveProcessor in Applications
*In Dirac Live Processor, go to Option→Audio Settings...
*In Output select the audio interface you want to use. Do not select "Dirac Virtual Audio Device"
*Open Audio MIDI Setup and make sure Dirac Virtual Audio Device is in the list of soundcards
*Play a sound and make sure the sound is passing through the Dirac Live Processor
You are now ready to perform a measurement and create your first filters.
Open Options→Audio Settings... dialog box and the signal should come back.
Make sure Dirac Virtual Audio Device is selected as the system Audio Output.
Dirac Virtual Audio Device does not appear in device select
Open Finder and select Go → Go to Folder
If you have a folder named "HAL", restart your device to make sure your installation is complete, and then check for the Dirac Virtual Audio Device again.
If you do not have the "HAL" folder, create one and reinstall the Dirac Processor. Then check whether VAD.driver appears in the HAL folder.
Processor is silent
Activate Processor as described above, ensuring that Processor recognizes signal from your Mac (i.e. that the "No Signal" warning does not appear).
If Processor is still silent, open Control Center → Sound or Audio MIDI Setup and select your desired output device as sound output.
Using the volume keys or slider, turn the volume up for the output device. The volume level here (for example, 60%) becomes the maximum level that Processor can utilize (meaning that, if Processor is active and turned up to 100%, it is only outputting 60% volume).
Reactivate Processor by switching output back to Dirac Virtual Audio via Control Center → Sound or Audio MIDI Setup.
Adjust volume as desired using the volume keys or slider.