A stereo file tells you where a sound is on the horizontal axis, but a volumetric audio bed tells you where the listener is standing inside the room — and that distinction is the whole reason VR and immersive cinema sound the way they do. 43 spatial drones, 3D textures, depth-shifting pads and immersive room tones, all built to behave under binaural and ambisonic rendering rather than collapse to a flat centre image when the head turns.
VR developers reach for the longer room tone loops to anchor a scene's geometry — the audience subconsciously locates walls and ceilings from those low cues alone. Game audio designers use the depth-shifting pads for transitions between exterior and interior spaces; the brain reads the shift as a literal step through a doorway. Cinema mixers pull the 3D textures for prologue beats where image hasn't arrived yet. Take whatever fits the scene — the whole library is free to download for VR, game and immersive cinema work.