When it comes to tracking physical objects in virtual spaces, pretty much every company is relying on light in some form. Oculus and HTC have their light mapping sensors, while Sony's PlayStation VR relies on infrared for its motion tracking camera. Hauoli, a young Austin-based startup demoing at SXSW, has something different in mind. It's developed a way to track virtual objects with sound. It's entirely software based and works with just about any speaker, so it also removes the need for expensive motion tracking hardware.
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