Real-time rendered VR experiences typically use object-based 3D audio, which use a graphics-like audio engine to propagate sound through a virtual scene (as a plugin for Unreal or Unity, for example.) Several object-based 3D audio renderers exist, including VisiSonicsвЂ™ own RealSpace 3D Audio (RS3D), which uses physics-based sound propagation for the most accurate and immersive 3D audio.ДЇor 360 video, capturing audio as object data is too computationally intensive, and requires a player that can read the scene data (such players are being developed, including by VisiSonics.) A commonly used intermediate audio solution, which allows the representation of the sound field near a listener using specialized mathematical functions called spherical harmonics, is known as Ambisonics. вЂњlook hereвЂќ voice over, etc.) With the вЂњlook hereвЂќ VO example, 3D audio is key to render the voice spatially so that the user can turn to look in the right place. If you want the user to look in a certain direction at a particular point in time, sound can be used as a prompt (i.e. With VR/AR/MxR, the story can be conveyed in any direction, thus content creators must approach sound differently than traditional media. When it comes to storytelling, sound in traditional cinema is used to support the visual field in front of the audience: cinematic sound is mixed in away to prevent the audience to look behind them, for example, because all of the relevant aspects of the story are always conveyed in front. For VR/AR/MxR adoption (including stereo 360 video), 3D audio is critical in order to deliver the level of immersion that the human brain expects - anything less makes breaks immersion in the virtual experience.

From a simulation perspective, if the aural cues do not match whatвЂ™s happening visually, the brain will experience fatigue preventing users from wanting to continue in a virtual experience. While attempting to solve perceptual issues associated with sound simulation in virtual environments, it was discovered (among many things) that in the human brain, the area dedicated to aural perception is similar in size to the area dedicated to visual perception, being part of a larger perceptual system. With sound, you perceive something behind you without the need to turn your head.ДЄt CES 2017, Humeneyes and VisiSonics announced a partnership bringing 3D audio capabilities to the VUZE+ camera, based on over a decade research and development at the University of Maryland. We perceive sound in all directions at once which is quite different from our foveated vision our eyes only provide a partial вЂfield of viewвЂ™ of the world around us, and so in order to see something behind, for example, you have to turn your head. Our brains collect information about the environment through subtle changes in sound for survival - to determine whether or not an environment is small or large, indoor or outdoor, location of threats, etc. Through millions of years of evolution, sound perception became crucial to the human experience. Menu Spatial (3D) Audio - Visisonics & Vuze+ camera 26 February 2018 on Vuze, Immersive Technology, How-To, 3D audio, VisisonicsДЄuthor: Michel Henein, VP Product at VisiSonics Corporation.

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