The ATSC TG3 Technology Group voted May 2 to elevate the A/342 audio standard — both AC-4 and MPEG-H AA audio — to ATSC 3.0 Candidate Standard status, an ATSC spokesman confirmed today.
In February an informal acknowledgement that both Dolby’s AC-4 and MPEG-H would be approved for ATSC 3.0 and that individual countries or regions would be allowed to select which to use was made during a presentation at the HPA Retreat.
At the 2016 NAB Show last month, Fraunhofer, one of the leading proponents of MPEG-H immersive and personalized audio, confirmed that AC-4 would be used in the United States and MPEG-H would be on-air as part of South Korea’s implementation of ATSC 3.0.
The Advanced Television Systems Committee also said TG3 members are in the process of voting to elevate the A/322 Physical Layer to Candidate Standard status. The ballot closes May 6.
The A/321 Bootstrap system discovery and signaling part of the physical layer already was approved by the ATSC member as a final standard on March 23.