Spatial Audio is already synonymous with 3D Audio as 3D means a ‘space’. Therefore, the term “Spatial” and “Immersive” came up as new terms. As result, people have no impression of the term “3D”. While the MPEG-H is an International Standard that encompasses format and compression (codec).ģD audio, as mentioned earlier, is the audio that represents three-dimensional space, however, the term was being used too early like ‘3D Surround’ as marketing, even before the true meaning of three-dimensional has been created by frontiers in the audio industry. There’s a Dolby AC4 (compression method) + ATMOS (signal format) combination as an alternative to the market. It is also used as a delivery format for Immersive Audio in Tidal, Amazon Echo, and more. It’s adopted as a next generation audio format for UHDTV in many countries including the US, EU, Japan, and Korea. MPEG-H Audio was originally standardized to meet the audio requirements for the UHDTV applications. Because the term 3D audio is already being used in the 1960s… Just expected, it’s being called “MPEG-H Audio” these days. 3D is such a traditional term representing this standard’s identity– nothing new and fresh. The standard contains and delivers the audio signal that spans 3D space with one of the channels, object, audio scene data (called Ambisonics), and their combinations in one. As time flew, the audio experts at MPEG came up with a new standard, MPEG-H 3D Audio (ISO/IEC 23008-3), in 2014.

3d audio experience