Shulou(Shulou.com)12/24 Report--

CTOnews.com, December 19, according to the official account of "New Generation artificial Intelligence Alliance", on December 7, 2023, Zhongguancun Audiovisual Industry Technology Innovation Alliance approved the release of "Information Technology Virtual reality content expression Audio" (standard number T / AI 125-2023) group standard. The drafting units include:

Tsinghua University, Beijing Institute of Technology, China Institute of Electronic Technology Standardization, Beijing word hopping Network Technology Co., Ltd., Sain Core Micro (Beijing) Electronic Technology Co., Ltd., Beijing Panorama Sound Information Technology Co., Ltd., Tianjin Electronic Information Research Institute of Tsinghua University, Peking University, Migu Culture Technology Co., Ltd., Tencent Technology (Shenzhen) Co., Ltd., Beijing iqiyi Technology Co., Ltd., Xiaomi Communication Technology Co., Ltd., Panorama (Beijing) Intelligent Technology Co., Ltd., Huawei Technology Co., Ltd., Communication University Of China.

According to the official account of ▲ Image Source "New Generation artificial Intelligence Alliance", the formal formulation of AVS VR audio group standard "Information Technology Virtual reality content expression Audio" began at the 57th meeting of the working Group held in June 2016. AVS Audio Group output "AVS Virtual reality Audio Technology proposal solicitation document V1.0" to start the recruitment work of immersive audio codec and rendering technology in virtual reality.

On April 7, 2020, the new generation artificial intelligence industry technological innovation strategic alliance and Zhongguancun audio-visual industry technological innovation alliance standards working group jointly considered and decided to establish an AVS VR audio group standard.

After 41 formal and ad hoc meetings of the working group, the AVS VR audio group standard received a total of 115 proposals related to VR audio, 39 technical proposals were adopted, and the AVS VR audio group standard FCD was formed on November 25, 2022.

After AVS VR Audio completed the group bid consultation draft on January 6, 2023, the draft was submitted for review, which was examined by the Multimedia Sub-Committee of the National Beacon Commission on October 26, 2023, and finally the group standard was officially released on December 7, 2023.

AVS VR audio standard describes the metadata, renderer and transmission-oriented data flow for audio expression in virtual reality, and supports the technical functions needed in virtual reality scenes such as 3DOF and 6DOF. It involves related technical descriptions such as acquisition, production, rendering and playback of three kinds of signals based on sound channel, object and scene. All the technologies adopted in the AVS VR audio standard are tested and verified by the third party according to the VR audio test scheme, including normative verification, functional verification and subjective rendering effect testing, and verified in the actual system.

The corresponding technology in the standard has long been applied in major events and activities. In September 2022, the "Cloud listening" client of the Central Radio and Television Station completed the live broadcast of the CCTV Mid-Autumn Festival Gala using headphone rendering technology in the AVS VR audio standard. The CCTV broadcast demonstration system of the World Cup in November 2022 uses the loudspeaker rendering technology of the AVS VR audio standard to monitor, generate metadata from the production side, and generate real-time and dynamic metadata according to the intention of the producer, realizing the complete process of making, monitoring and sending data. At the same time, AVS VR audio binaural rendering technology is also tested and verified by subjective listening test under 3DOF and 6DOF based on Unity3D software platform in VR head display device.

Under the premise of following ITU-R BS.2076-2 specification, AVS VR audio standard provides elements definition, coding specification and rendering reconstruction suggestions of virtual reality audio content, which is suitable for panoramic audio broadcasting, immersive audio communication, virtual reality audio interaction and other fields in China, and serves audio applications in virtual reality (VR / AR / MR / XR) devices and related systems.

Combined with the actual situation of the development of the domestic virtual reality audio industry, according to the standard of the AVS working group and the working specification of the AVS audio group, under the organization of the AVS audio group, consider the technical proposal, formulate the test scheme, test and evaluate according to the technical requirements, adopt the technical proposal to meet the technical requirements and better performance, and build the infrastructure of the standard technology. The draft standard is formed through standard text editing and reference software verification. This standard fills the gap of domestic virtual reality audio technology standard, and strives to play a key role in the formulation of relevant international standards.

The standard will first be published as an AVS group standard and apply to be issued as a national standard and an IEEE international standard.

CTOnews.com Note: the new generation of artificial intelligence industry technological innovation strategic alliance (AITISA) is composed of more than 200 enterprises, universities and scientific research institutes, capital institutions, service institutions and innovative start-up enterprises from the artificial intelligence industry.

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