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Journal Article Open Access

MPEG-I Immersive Audio—The ISO/MPEG Standard for Virtual/Augmented Reality Audio

Authors: Disch, Sascha; Terentiv, Leon; Koppens, Jeroen; Falk, Tommy; Leppänen, Jussi; Munoz, Isaac; Herre, Jürgen; Adami, Alexander; Silzle, Andreas; Fischer, Daniel; Setiawan, Panji; Fersch, Christof; Hanschke, Jan-Hendrik; Jelfs, Sam; de Bruijn, Werner; Eronen, Antti; Mate, Sujeet; Dick, Sascha; Borss, Christian; Delgado, Pablo M.; Trinidad, Miguel M.

Journal of the Audio Engineering Society · Volume 74 · Issue 6 · pp. 356–375 · June 2026

Abstract

The ISO/MPEG international standard on MPEG-I immersive audio was issued in November 2025 by the MPEG Audio group (ISO/IEC JTC 1/SC 29/WG 6). It provides technology for a compressed audio representation and real-time interactive rendering within virtual and augmented reality applications with six degrees of freedom. It enables efficient bitrate management, high-quality storage, and transmission of virtual environments, including audio sources with spatial dimensions and specific radiation traits (such as musical instruments), along with geometric descriptions of acoustically relevant scene details (e.g., walls, doors, sound reflecting, and occluding elements). The audio rendering process incorporates comprehensive modeling of room acoustics and intricate acoustic phenomena, including occlusion, reflection, and diffraction caused by sound obstacles, Doppler effect, and dynamic environment changes triggered by user interactivity. This article presents an overview of background, development, underlying technology, and selected application aspects of the new standard.

Details

Publication
Journal of the Audio Engineering Society
Volume
74
Issue
6
Pages
356–375
Publication date
June 8, 2026
Affiliation
Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany; Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany; Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany; Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany; Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany; Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany; Fraunhofer Institute for Integrated Circuits (IIS), Erlangen, Germany; Dolby Germany GmbH, Nuremberg, Germany; Dolby Germany GmbH, Nuremberg, Germany; Dolby Germany GmbH, Nuremberg, Germany; Dolby Germany GmbH, Nuremberg, Germany; Dolby Germany GmbH, Nuremberg, Germany; Koninklijke Philips N.V., Eindhoven, the Netherlands; Koninklijke Philips N.V., Eindhoven, the Netherlands; Ericsson AB, Stockholm, Sweden; Nokia Technologies, Helsinki, Finland; Nokia Technologies, Helsinki, Finland; Nokia Technologies, Helsinki, Finland; Qualcomm Technologies Inc., San Diego, CA, USA; International Audio Laboratories Erlangen, Germany; Ericsson Telecommunicatie B.V., Breda, the Netherlands (See document for exact affiliation information.)
Type
Journal Article