This video showed up as recommended in youtube for me
I was immediately interested in figuring out how they did this and does it work? So in about 10 minutes I created my own version of what I thought could be similar. The results are pretty amazing actually!
What you will need to do this is an EQ match program and a test tone generator, or get free sine samples online.
1. Create tracks like the picture below. Each track has the sine frequency labeled on the name of the track with -20db
[Blocked Image: https://snag.gy/DdhE1g.jpg]
2. Run all the frequencies for the Left at the same time and make sure you are not clipping. Then on your interface lower the headphone volume until you can barely hear it.
3. Next on the main track for Left insert your EQ match program. I am using Ozone 7
4. With all the frequencies running click on Target Audio in Ozone (your program might have a different name,) Capture that. See pic below
[Blocked Image: https://snag.gy/JoZVpw.jpg]
5.Mute all tracks except the main track with ozone and 12.5kHz track.
6. Adjust the gain in the tone generator program or the track itself if you are using a wave file to barely hear the tone.
7. Mute 12.5 and enable track 8kHz. Repeat step 6 for the rest of the tones one by one.
8. Enable all tone tracks for Left and open Ozone in the main Left channel. Capture this as the Reference Audio.
9. Click Matching and set Smoothing to 50% and Amount to 100%
10. Start at #2 and repeast all steps for the right side.
My results
Left ear
[Blocked Image: https://snag.gy/SCOwAP.jpg]
Right ear
[Blocked Image: https://snag.gy/ScVY1s.jpg]
Now use those master tracks for left and right. Put your other tracks inside those to hear the difference.
For the test I have an IR running on the master to make my HD600 have a flat response. IR was created from the Sonarworks plugin
Who knows if I am even close to what they are doing or if this improves anything?! But for me it sounds pretty damn awesome! If you already have an EQ Match program give it a shot.