HRTF for Arma 3, Skyrim, Fallout 4 and potentially other titles using X3dAudio + XAudio2 (except ones running on Unreal Engine).
HRTF, HRIR, Binaural sound, Spatial sound, Ambisonics
Visit releases page and grab the latest one. Ensure the version you download matches version of the game (x86 or x64).
Unpack the contents of the package to the game folder where the main executable is located. Ensure it is the exe of the game itself, not a launcher. If your game uses prior version of x3daudio (earlier than 1.7), you can try to rename the dll to the one the game uses. Run the game. Enjoy! Note: some anti-cheat software (e.g. BattleEye) won't let you hook anything into the game, so you will have to disable it. That means no HRTF in multiplayer.
Game hooks both x3daudio1_x.dll, which is simple, and IXAudio2 COM interface, which is a less trivial thing to do. X3daudio proxy remembers 3D audio position into repository. To mark sound as 3D it sets the first coefficient of the mixing matrix to NaN. And the second one is set to sound ID, so we can later identify it. Let's hope game is not that stupid and won't pass a 1x1 matrix. Then, when game calls IXAuido2Voice::SetOutputMatrix(), we check if 1st coeff == NaN which means we have to enable our XAPO DSP effect and pass parameters to it (position, etc).
Works well now. No tricky things there. Has pretty complex audio mixing graph, but nothing wierd. BattleEye must be disabled in order to work.
Has glitches. I haven't investigated them yet. Most sounds were fine, but HMMWV's engine sound was coming from a completely different direction when I was playing. BattleEye must be disabled in order to work.
Works perfectly now. Skyrim always creates Mastering voice as six-channel. We override it to two-channel.
Works well. Uses the same codebase as Skyrim, so nothing different here. The only difference is x64 platform.
The given library is licensed under the GPLv3.
Copyright (c) 2007-2012, Marton Anka Portions Copyright (c) 2007, Matt Conover
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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