Andy Farnell drops some serious knowledge in a 2011 DAFx lecture. Check it out at topophonie. This is a great introduction to the history of procedural audio and its emergent role in interactive art and media.  If the audio cuts out in the video at around 18:05, feel free to add your own sound algorithm. Andy would want it that way.

The use of 3D interactive virtual environments is becoming more widespread in areas such as games, architecture, urbanism, information visualization and sonification, interactive artistic digital media, serious games, gamification. The limitations in sound generation in existing environments are increasingly obvious with current requirements.

 

Thanks to @JGarciaMartin for pointing out the lecture