The emerging MPEG-I Immersive Audio Standard for Virtual Reality and Augmented Reality (VR/AR) Audio provides a wide range of capabilities for 6DoF rendering of virtual scenes from simple point source rendering to sophisticated modelling of acoustic sources (object, channel and HOA sources with extent, directivity and Doppler), and environmental aspects (early reflections, late reverberation, occlusion and diffraction). Furthermore, the scene representation metadata is compressed into a compact bitstream that is ideal for streaming and storage. Waveform carriage of acoustic sources relies on MPEG-H audio. This paper describes the general architecture of the standard and highlights some of its advanced features. The Final Draft International Standard (FDIS) of the specification is scheduled for January 2025.

Authors: Herre, Juergen; Disch, Sascha; Borß, Christian; Silzle, Andreas; Adami, Alexander; Peters, Nils
Affiliation: International Audio Laboratories Erlangen, Fraunhofer IIS, Fraunhofer IIS, Fraunhofer IIS, Fraunhofer IIS, International Audio Laboratories Erlangen
AES Conference: AES 2024 International Audio for Games Conference (April 2024)
Paper Number: 19
Publication Date: April 27, 2024
Subject: ISO/MPEG MPEG MPEG-I Immersive Audio VR AR Virtual Reality Augmented Reality Standardization Bitstream Renderer Scene Description Low Bitrate Audio Coding

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