Article

MPEG-I Immersive Audio –The Upcoming New Audio Standard for Virtual / Augmented Reality (de)

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Day / Time: 08.03.2023, 15:40-16:20
Typ: Poster
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Abstract:

Research in the field of auditory virtual environments has a long history. When combined with a visual counterpart and motion tracking, virtual environments can be used in widespread so-called Virtual Reality (VR) or Augmented Reality (AR) application fields. Only recently, the visual part of such VR implementations achieved acceptable characteristics (resolution, latency, price, etc.) for the mass market. International standards have often helped an application field to get widely used by providing formats and software that enable both interoperability between different implementations and format stability over long periods of time. This way, CE companies and service providers creating infrastructure and content for different platforms can together establish a healthy ecosystem and reach the population beyond early adopters. Currently, the MPEG Audio working group defines the new MPEG-I Immersive Audio standard for Virtual and Augmented Reality. The normative bitstream and renderer are defined to provide a real-time auditory world consisting of spatially distributed sound sources and listeners with six Degrees of Freedom (6DoF), both of which can move interactively. This includes the modelling of point sources, sized sources, coupled rooms and the realistic auralization of (room) acoustic phenomena, like reflections, diffraction, occlusion, late reverberation, Doppler and more. A specifically developed encoder input format allows the definition of such feature-rich acoustic worlds.

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