Audio can be just as important as visuals if you want to make true-to-life VR experiences. That's why Oculus has introduced changes to the Rift SDK that give developers the power to make spatial audio as realistic as possible. One of the features the company added is called Near-Field head-related transfer function (HRTF). Ordinary HRTF is necessary to create a 3D audio experience, but it can only replicate how sounds would reach your ears from a meter away. This improved HRTF can mimic how sounds would reach your ears from a much closer distance. It can, for instance, make a whisper or the sound of a phone ringing as you bring it to your ears much more life-like.