AC-4 is a state of the art audio codec standardized in ETSI (TS103 190 and TS103 190-2) and the TS103 190 is part of the DVB toolbox (TS101 154). 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, dialogue 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.

Authors: Kjörling, Kristofer; Rödén, Jonas; Wolters, Martin; Riedmiller, Jeff; Biswas, Arijit; Ekstrand, Per; Gröschel, Alexander; Hedelin, Per; Hirvonen, Toni; Hörich, Holger; Klejsa, Janusz; Koppens, Jeroen; Krauss, K.; Lehtonen, Heidi-Maria; Linzmeier, Karsten; Muesch, Hannes; Mundt, Harald; Norcross, Scott; Popp, J.; Purnhagen, Heiko; Samuelsson, Jonas; Schug, Michael; Sehlström, L.; Thesing, R.; Villemoes, Lars; Vinton, Mark
Affiliations: Dolby Sweden AB, Stockholm, Sweden; Dolby Germany GmbH, Nuremberg, Germany; Dolby Laboratories, San Francisco, CA USA(See document for exact affiliation information.)
AES Convention: 140 (May 2016) Paper Number: 9491
Publication Date: May 26, 2016 Import into BibTeX
Subject: Audio Signal Processing: Coding, Encoding, and Perception
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=18190

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