Designed to enhance all interactive products, specifically VR applications, Steam Audio adds physics-based sound propagation on top of HRTF-based binaural audio.
- Project home on github 
- steamcommunity.com
Steam Audio’s range of features include HRTF-based binaural rendering, occlusion, physics-based reverb, real-time sound propagation and baked reverb and propagation.
YOUTUBE 9lywYAGSgdc Steam Audio Partial Occlusion Demo
Supporting multiple platforms: Windows, Linux, macOS, Android, Steam Audio is not restricted to any particular VR device or to Steam.
YOUTUBE Li9vn_LeW5I Getting Started with Steam Audio in Unity
The Steam Audio SDK currently supports including C API for integration into other game engines and audio middleware.
Free of charge, and without any royalty requirements, the Steam Audio SDK can be downloaded now from github
# See also - 3D Sound Libraries - Javascript Sound Libraries - Ableton 3D Sound