Delivering Scalable Audio Experiences using AC-4
| Autor: | Jens Popp, Hannes Muesch, Kristofer Kjörling, Jeroen Koppens, Janusz Klejsa, Michael Schug, Sripal S. Mehta, Toni Hirvonen, Jonas Samuelsson, Heidi-Maria Lehtonen, Mark Stuart Vinton, Per Ekstrand, Martin Wolters, Leif Sehlstrom, Lars Villemoes, Harald Mundt, Kurt Krauss, Jeffrey Riedmiller, Karsten Linzmeier, Scott G. Norcross, Prinyar Boon, Alexander Gröschel, Tim Carroll, Barbara Resch, Arijit Biswas, Heiko Purnhagen, Per Hedelin, Holger Hörich, Jonas Röden, Nicolas R. Tsingos |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Multimedia
Computer science MPEG-4 Part 3 030229 sport sciences 02 engineering and technology computer.file_format computer.software_genre 03 medical and health sciences 0302 clinical medicine Adaptive Multi-Rate audio codec Audio codec Advanced Audio Coding MPEG-4 0202 electrical engineering electronic engineering information engineering Media Technology Codec 020201 artificial intelligence & image processing Electrical and Electronic Engineering Audio over Ethernet computer Digital audio |
| Zdroj: | IEEE Transactions on Broadcasting. 63:179-201 |
| ISSN: | 1557-9611 0018-9316 |
| DOI: | 10.1109/tbc.2017.2659623 |
| Popis: | AC-4 is a state-of-the-art audio codec standardized in ETSI (TS 103 190 and TS 103 190-2) and included in the DVB toolbox (TS 101 154 V2.2.1 and DVB BlueBook A157) and, at the time of writing, is a candidate standard for ATSC 3.0 as per A/342 part 2. AC-4 is an audio codec designed to address the current and future needs of video and audio entertainment services, including broadcast and Internet streaming. As such, it incorporates a number of features beyond the traditional audio coding algorithms, such as capabilities to support immersive and personalized audio, support for advanced loudness management, video-frame synchronous coding, dialog enhancement, etc. This paper will outline the thinking behind the design of the AC-4 codec, explain the different coding tools used, the systemic features included, and give an overview of performance and applications. It further outlines metadata aspects (immersive and personalized, essential for broadcast), metadata carriage, aspects of interchange of immersive programing, as well as immersive playback and rendering. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|