By skyforbes 
Hello ! I've just tried a HRTF (Head-Related Transfer Function) mod for Fallout 4 and it was truly great. For the first time ever I could hear above/below and front/back with stereo headphone.
Now I want to recreate that with games that does not have native HRTF or a mod for it.
I know that Windows Sonic for headphone has to do with stereo spatial sound, but I'm really confused about it's funtionality, and there's is no definite information source that I can find.
Some say that is a OS sound renderer that require games to provide it with position information, which mean the games have to be aware of and support it.
Others say it takes 5.1/7.1 output and mixes it to 2 channel stereo, similar to virtual soundround for headphone.
Really looking for a correct answer.