Standard: MPEG-I
Part: 4

MPEG-I immersive audio supports 6DoF user experience. In addition to the 3DoF head movements (yaw, pitch and roll), which had already been supported by MPEG-H 3D Audio, the listener can now move within the acoustic scene (x,y,z). The scenes consist of audio objects and acoustic properties of the room including the simulation of acoustics like reverberation, early reflections, occlusion, diffraction and Doppler-shift. MPEG-I Audio standardizes additional metadata and rendering technology that delivers a compelling user experience with full 6DoF freedom of navigation. Rendering includes adaptation of the rendering to the actual listening space improving immersion for AR and VR.

Editions

Edition - 1: ISO/IEC NP 23090-4

Publication Year: 0
Status: published
Motivations:
Objectives:

Edition - 1: Immersive audio

Publication Year: 0
Status: released
Motivations: MPEG-H 3D Audio supports a 3DoF (yaw, pitch, roll) user experience at the movie "sweet spot," but it is desired to extend this to 6 DoF (adding x, y, z).
Objectives: MPEG-I Audio builds upon MPEG-H 3D Audio to provide an immersive audio VR experience with 6 DoF. MPEG-I Audio standardizes additional metadata and rendering technology that delivers a compelling user experience with full 6DoF freedom of navigation.

Whitepapers

Publication date	Title
2024-05-07	White Paper on MPEG-I Immersive Audio

Meeting documents

MPEG 149

Publication date	Title
2025-03-25	Text of ISO/IEC FDIS 23090-4 MPEG-I immersive audio

MPEG 147

Publication date	Title
2024-08-02	Text of ISO/IEC DIS 23090-4 MPEG-I immersive audio

MPEG 146

Publication date	Title
2024-05-08	Text of ISO/IEC CD 23090-4, MPEG-I immersive audio
2024-04-29	MPEG-I immersive audio Encoder Input Format, version 9
2024-04-29	MPEG-I immersive audio LSDF, version 3
2024-05-07	White Paper on MPEG-I Immersive Audio

MPEG 145

Publication date	Title
2024-02-23	MPEG-I immersive audio Encoder Input Format, Version 8

MPEG 143

Publication date	Title
2023-07-27	MPEG-I immersive audio Encoder Input Format, Version 6

MPEG 142

Publication date	Title
2023-04-30	MPEG-I immersive audio Encoder Input Format, Version 5

MPEG 141

Publication date	Title
2023-01-21	MPEG-I immersive audio Encoder Input Format, Version 4
2023-01-21	MPEG-I immersive audio augmented reality Listener Space Description Format, Version 2
2023-01-21	MPEG-I immersive audio Core Experiment Methodology, Version 2

MPEG 140

Publication date	Title
2022-10-31	MPEG-I Immersive Audio Encoder Input Format, Version 3

MPEG 136

Publication date	Title
2021-10-16	MPEG-I Immersive Audio Documentation for the Audio Evaluation Platform, Version 2
2021-10-16	MPEG-I Immersive Audio Subjective Test Logistics
2021-10-16	MPEG-I Immersive Audio CfP Document Set - Final
0000-00-00	MPEG-I Immersive Audio additional instructions for Test Supervisors and Test Subjects

MPEG 135

Publication date	Title
2021-07-17	MPEG-I Immersive Audio CfP Supplemental Information, Recommendations and Clarifications, Version 1
2021-07-17	MPEG-I Immersive Audio Test and Evaluation Procedures
2021-07-20	MPEG-I Immersive Audio Core Experiment Methodology
2021-07-17	MPEG-I Immersive Audio Documentation for the Audio Evaluation Platform, Version 1
2021-07-17	MPEG-I Immersive Audio CfP Document Set

MPEG 134

Publication date	Title
2021-05-05	MPEG-I Immersive Audio Encoder Input Format
2021-05-05	MPEG-I Immersive Audio Augmented Reality Listener Space Description Format
2021-05-05	MPEG-I Immersive Audio Call for Proposals