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'''MPEG-H 3D Audio''', specified as [[International Organization for Standardization|ISO]]/[[International Electrotechnical Commission|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.
Channels, objects, and HOA components may be used to transmit immersive sound as well as mono, stereo, or surround sound. The MPEG-H 3D Audio decoder renders the bitstream to a number of standard speaker configurations as well as to misplaced speakers. [[Sound localization|Binaural rendering]] of sound for headphone listening is also supported.
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In February 2015 MPEG announced that MPEG-H 3D Audio would be published as an International Standard.<ref name=3DAudioFebruary2015MPEG111>{{cite news |title=MPEG-H 3D Audio progresses to International Standard |publisher=MPEG |url=http://mpeg.chiariglione.org/sites/default/files/files/meetings/docs/w15066_0.docx |accessdate=2015-03-14}}</ref>
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.<ref name=ATSCAudioMarch2015>{{cite news |title=Advanced Television Systems Committee Begins Review of ATSC 3.0 Audio System Proposals |publisher=[[Advanced Television Systems Committee]] |url=http://www.atsc.org/cms/index.php/communications/press-releases/358-advanced-television-systems-committee-begins-review-of-atsc-30-audio-system-proposals |date=2015-03-10 |accessdate=2015-03-14 |
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.<ref>{{cite news|title=Fraunhofer IIS, Qualcomm and Technicolor to Demonstrate the World’s First Live Broadcast of MPEG-H Interactive and Immersive TV Audio|url=http://www.businesswire.com/news/home/20150410005978/en/Fraunhofer-IIS-Qualcomm-Technicolor-Demonstrate-World%E2%80%99s-Live|accessdate=9 October 2015|publisher=Business Wire}}</ref><ref>[http://electronicdesign.com/communications/mpeg-h-audio-brings-new-features-tv-and-streaming-sound MPEG-H Audio Brings New Features to TV and Streaming Sound, ''Electronic Design'', July 10, 2015]</ref>
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In August 2015 the [[Advanced Television Systems Committee]] announced that systems from [[Dolby Laboratories]] and the [http://www.mpeghaa.com MPEG-H Audio Alliance] (Fraunhofer, [[Technicolor SA|Technicolor]], and [[Qualcomm]]) were demonstrated to the ATSC showing how they would work in both professional broadcast facilities and consumer home environments.<ref>{{cite web|title=Listen Up! Atlanta Hears ATSC 3.0 Audio As Proponents Demonstrate Advantages|url=http://atsc.org/newsletter/listen-up-atlanta-hears-atsc-3-0-audio-as-proponents-demonstrate-advantages/|website=Advanced Television Systems Committee|publisher=Advanced Television Systems Committee|accessdate=9 October 2015}}</ref><ref>{{cite news|title=Demonstrations Show Off Potential of ATSC 3.0 Audio Standard|url=http://sportsvideo.org/main/blog/2015/08/06/demonstrations-show-off-potential-of-atsc-3-0-audio-standard/|accessdate=9 October 2015|publisher=Sports Video Group}}</ref>
On April 18, 2016, South Korean broadcast equipment manufacturers Kai Media and DS Broadcast announced the availability of MPEG-H 3D Audio in their latest 4K broadcast encoders.<ref>{{Cite web|url=http://www.audioblog.iis.fraunhofer.com/tv-encoder-mpeg-h/|title=First broadcast encoders with MPEG-H Audio launched {{!}} Fraunhofer Audio Blog|date=2016-04-18|language=en-US|access-date=2016-08-02}}</ref>
On May 2, 2016, the [[Advanced Television Systems Committee]] has elevated the A/342 audio standard for ATSC 3.0 to the status of a Candidate Standard. The MPEG-H Audio Alliance TV audio system and [[Dolby AC-4]] are part of the A/342 standard.<ref>{{Cite web|url=http://atsc.org/newsletter/more-atsc-3-0-standards-progress/|title=More ATSC 3.0 Standards Progress! - ATSC|language=en-US|access-date=2016-08-02}}</ref>
On June 24, 2016, the South Korean standardization organization "Telecommunications Technology Association" TTA published the standard for "Transmission and Reception of Terrestrial UHD TV Broadcasting Service" for the South Korean terrestrial UHD TV broadcasting service to be launched in February 2017. The TTA standard is based on [[ATSC 3.0]] and specifies MPEG-H 3D Audio as the sole audio codec for the 4K TV system.<ref>{{Cite web|url=http://www.tta.or.kr/English/new/standardization/eng_ttastddesc.jsp?stdno=TTAK.KO-07.0127|title=Transmission and Reception for Terrestrial UHDTV Broadcasting Service|last=|first=|date=2016-06-24|website=|publisher=TTA|access-date=2016-08-02}}</ref>
On January 3, 2017, Fraunhofer IIS announced a trademark program to identify interoperable products that include MPEG-H.
On January 8, 2019, Sony announced a immersive music service "360 Reality Audio" that uses MPEG-H.<ref>{{Cite web|url=https://www.prnewswire.com/news-releases/sony-introduces-all-new-360-reality-audio-music-experience-that-immerses-listeners-in-a-three-dimensional-sound-field-powered-by-object-based-spatial-audio-technology-300774115.html|title=Sony Introduces All New "360 Reality Audio" Music Experience That Immerses Listeners in a Three-Dimensional Sound Field Powered by Object-Based Spatial Audio Technology|last=Sony|first=|date=|website=www.prnewswire.com|language=en|archive-url=|archive-date=|
==Profiles==
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