MPEG-H 3D Audio

MPEG-H 3D Audio, specified as ISO/IEC 23008-3 (MPEG-H Part 3), is an audio coding standard developed by the ISO/IEC Moving Picture Experts Group (MPEG) to support coding audio as audio channels, audio objects, or higher order ambisonics (HOA). MPEG-H 3D Audio can support up to 64 loudspeaker channels and 128 codec core channels. Objects may be used alone or in combination with channels or HOA components. The use of audio objects allows for interactivity or personalization of a program by adjusting the gain or position of the objects during rendering in the MPEG-H decoder.

History

In January 2013 the requirements were released for MPEG-H 3D Audio which was for an increase in the immersion of audio and to allow for a greater number of loudspeakers for audio localization.[1] The allowed audio types would be audio channels, audio objects, and HOA.[1]

On September 10, 2014, Fraunhofer IIS demonstrated a real time MPEG-H 3D audio encoder.[2]

In February 2015 MPEG announced that MPEG-H 3D Audio would be published as an International Standard.[3]

On March 10, 2015, the Advanced Television Systems Committee announced that MPEG-H 3D Audio was one of the three standards proposed for the audio system of ATSC 3.0.[4]

On April 10, 2015, Fraunhofer, Technicolor, and Qualcomm demonstrated a live broadcast signal chain consisting of all the elements needed to implement MPEG-H based audio in broadcast television. The demonstration featured a simulated remote truck at a sports event, a network control center, a local affiliate station, and a consumer living room. The audio was produced and encoded through an MPEG-H audio monitoring and authoring unit, mpeg-h real-time broadcast encoders, and real-time professional and consumer MPEG-H decoders. The audio was decoded in the consumer living room on a Technicolor set-top box.[5]

In April 2015 the Advanced Television Systems Committee announced that systems from Dolby Laboratories and the MPEG-H Audio Alliance (Fraunhofer, Technicolor, and Qualcomm) would be tested in the coming months for use as the audio layer for the ATSC 3.0 signal.[6]

In August 2015 the Advanced Television Systems Committee announced that systems from Dolby Laboratories and the MPEG-H Audio Alliance (Fraunhofer, Technicolor, and Qualcomm) were demonstrated to the ATSC showing how they would work in both professional broadcast facilities and consumer home environments.[7][8]

Profiles

The Main profile of MPEG-H 3D Audio has 5 levels.[9]

Levels for the Main profile of MPEG-H 3D Audio[9]
Level Maximum number of
core channels		 Maximum number of
loudspeaker channels
1 8 8
2 16 16
3 32 24
4 64 24
5 128 64

See also

References

External links


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