procedural_generation

Procedural generation is content generated from algorithms.
1.NPC voice: tuned Text2speech templates
2.Cinematics:Scripted in-game instances/scripted NPC actions. 3.Music:procedurally generated music.
4.Textures: procedurally generated textures from seed values.
5.Sound Effects:procedurally generated(and cached in memory) from template.
6.Terrain:procedurally generated(and cached in memory) from seed values. 7.3D models: procedurally generated components.
https://en.wikipedia.org/wiki/Procedural_generation