We use sound effects to evacuate people from fires in tunnels when they can't see any direction in the smoke. Which involves detecting the fire in the first pla

We use sound effects to evacuate people from fires in tunnels when they can't see any direction in the smoke. Which involves detecting the fire in the first place, and establishing binaural effects that are directional and suggestive of the direction you should take. Explaining the implementation would take a wall of text, just listed the aspects that make it interesting.