Valve has released the Steam Audio SDK 4.5.2 as fully open-source under an Apache 2.0 license, marking it as the first open-source release of the Steam Audio SDK source code. This development allows developers to utilize Steam Audio in commercial products and customize it under their own licensing terms without sharing the source code. The SDK consists mainly of bug fixes and standard changes. This immersive audio solution for games and VR includes plug-ins for Unity, Unreal Engine, and other platforms, offering real-time sound propagation, VR integration, and impressive 3D audio capabilities. Valve’s commitment to open-source projects like this continues to benefit the gaming community.
https://www.phoronix.com/news/Steam-Audio-SDK-Fully-Open