https://www.reddit.com/r/GameAudio/wiki/fmod/
FMOD simplifies the process of creating sound behaviors, with a comprehensive set of features for dealing with any game scenario. As a Verified Solution, FMOD integrates seamlessly with Unity. Real-time editing reduces development times and keeps you in the flow. FMOD is an end-to-end solution for adding sound and music to any Unity project. Build adaptive audio using the FMOD Studio authoring tool and play it in-game using the FMOD audio engine. FMOD is a proprietary sound effects engine and authoring tool for video games and applications, that play and mix sounds of diverse formats on many operating systems.