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
Subject: Audio Signal Processing: Coding, Encoding, and Perception

Download Now (257 KB)

This paper is Open Access which means you can download it for free.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.