After admiring the lion pride, we crisscross the park's dirt roads, passing birds (there are 300 bird species in Gir), langur monkeys with whip-like tails and docile chital (Bambi-esque spotted deer).

WSJ: Jeeping Up on India's Wild Lions

The technology can make it sound as if a bird is flying around your head in a full circle, not just passing from one side of a room to the other.

BBC: 3D audio may revolutionise travel