Virtual Reality: Beyond Three Degrees-of-Freedom
* Presenting author
Virtual Reality (VR) makes it possible to experience anything, anywhere, anytime. The ultimate goal is to convince the human brain that it is in a different environment. Head-mounted displays, headphones, and hand controllers are commonly used to provide a fully immersive and multimodal experience. To explore the VR environment, the physical orientation and position of the user are tracked in six degrees-of-freedom (i.e., three rotational and three translational degrees-of-freedom). In this talk, recent developments in spatial audio for VR beyond the traditional three rotational degrees-of-freedom are discussed. Firstly, approaches to evaluate the audio quality in a VR environment based on scaling, ranking, and behavioral patterns of the listeners are discussed. Secondly, techniques that allow small or large translational movements of the listener in a sound scene that is recorded at one or multiple positions are discussed. Thirdly, results of a recent perceptual study related to the minimum-audible angle in a virtual reality environment are summarized. Finally, some thoughts on future research challenges and opportunities are provided.