Do you know the sound of three-dimensional color? This next-generation audio technology standard, led by the World Ultra High Definition Video Industry Alliance (UWA), may set off a new wave in the entire audio-visual industry. This may become the world's third largest audio technology after Dolby and DTS, right?
preface
But before unveiling the mystery of "three-dimensional sound of color", we have to know about UWA! It was established and developed in just a few years. In 2018, the Ministry of Industry and Information Technology (MIIT) and the China Electronic Information Industry Development Research Institute established the China Ultra High Definition Video Industry Alliance (CUVA), which is the "predecessor" of UWA. Since its establishment, UWA has been committed to promoting the upgrading of China's audiovisual technology and forming its own leading audiovisual technology standards.
China's ultra-high-definition video industry alliance, which started with only 42 companies, has grown into a "world-class" alliance, and the number of members has soared to more than 300. UWA not only brings together leading domestic companies such as Alibaba, Huawei, BOE, Tencent, TCL, Besitong, etc., but also attracts international giants such as the Central Institute of Communications of the Federal Republic of Russia, the National Television Association of Russia, Samsung, Sony, Dell, and Sharp Corporation of Japan. In addition, major TV stations, research institutes, and universities have joined. The diversity of members also gives UWA a strong driving force and influence in technological innovation, standard development and industry development.
Some members
First Meeting: What is Audio Vivid
UWA's definition of three-dimensional color sound is as follows, "It supports encoding based on mainstream signal types such as channel signals, HOA (High Order Ambisonics) signals, object signals, metadata, etc., and is compatible with mono, stereo, and surround sound, which can accurately place and move the sound in three-dimensional space, and accurately describe the position, size, trajectory, occurrence time, and duration of each sound." ”
How is it different from the Dolby Atmos we are familiar with? We know that Dolby Atmos is an object-based audio technology that allows audio engineers to process sound as a separate "object" rather than relying solely on traditional channels, and that each audio object has its own metadata, including location information, motion tracks, and other attributes. By controlling metadata, Dolby Atmos ensures a consistent sound experience across home theater playback devices.
As the first audio codec standard based on AI technology, 3D Sound has high encoding efficiency, which can accurately describe the position, size, trajectory, occurrence time and duration of each sound, providing greater flexibility and detail. Seems better?
Realization: The application of three-dimensional color sound
Having said so much, we have also found several application cases of 3D color sound to share:
The three-dimensional Jingcai sound made its debut at the 2023 Spring Festival Gala. At that time, in order to restore the immersive sound effect of the Spring Festival Gala, China Central Radio and Television Station, together with Huawei, Byte and other enterprises and institutions, deployed 30 sound field pickup microphones in the studio hall to pick up the live sound effect, as well as nearly 100 wireless microphones to pick up the voices of actors and hosts, and used high-end sound field technology to produce three-dimensional color sound in real time to create immersive three-dimensional sound effects. Many people don't know that at that time, the three-dimensional color sound had been presented on 8K ultra-high-definition public screens in about 500 urban cultural squares across the country.
At the end of 2023, when the Huawei Wenjie M9 debuted, it was also announced that the HUAWEI SOUND audio system is based on Audio Vivid audio coding technology, achieving an unprecedented listening experience, which is the first application of Audio Vivid in a car audio system, opening a new era of car audio.
In addition,Huazi's smart screenVpro、Smart screenV5pro,It has also obtainedAudio Vivid、HDR Vivid dual certification,Bring all-round upgrades in audio-visual experience。
Prospects: The future and reality of three-dimensional sound in color
In the near future, it is believed that 3D color sound will be presented in more and more products. And with it, there is also HDR Vivid, which is said to have a color bit depth of 10bit or even 12bit, displaying 1.07 billion colors, and HDR10, HDR10+. The UWA Alliance will be able to present Audio Vivid, HDR Vivid system, called "Elite Family".
But we also send out a torture question: do the TVs and sound bars at home support Audio Vivid and HDR Vivid?
According to UWA's introduction to this technology, in order to present the "Jingcai family", it needs to meet the requirements of network transmission bandwidth, latency, broadband service, decoding capability, independent audio system technology and other aspects. However, the reality is also a bit skinny, and the audio-visual products and film and television resources that can support Jingcai home technology are still very limited.
Therefore, at this stage, to build a simple ultra-high-definition audio-visual home theater, it is still recommended to support Dolby Vision TV, with Dolby Atmos TV audio. Among the domestic brands,Dolby Atmos TV sound that has done a good job is Jieke,3 blockbuster products launched this yearHA-920D、HA-920D、HA-960D,They correspond to low, medium and high demand groups,Refer to the figure below for specific products。
While enjoying Dolby Atmos, we also look forward to the large-scale application of 3D color sound and HDR in China and even the world, promoting technological innovation and shuffling the audio-visual industry.
The picture comes from the Internet