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Engineering Brief Open Access

Loudness Management in the Blu-ray Disc Ecosystem in the Context of Today’s Playback Environments

Authors: Ehret, Andreas; Mehta, Sripal; Ward, Mike

AES Convention 142 · Paper 318 · May 2017

Abstract

Loudness management within the Blu-ray Disc ecosystem has historically been less of a priority than in other media playback ecosystems. Instead, the industry has focused on delivering the highest fidelity and full dynamic range audio. As a result, the measured loudness of the content on Blu-ray Disc is generally not accurately indicated in the audio bitstreams carried on Blu-ray discs. However, as more use-cases emerge to connect Blu-ray Disc players to playback environments with limited dynamic range reproduction capabilities (such as TVs or Sound bars), loudness management is becoming more important to ensure optimal playback for these new device types. This brief explains the value of loudness management in the Blu-ray Disc ecosystem to address new playback environments and gives example workflows for correctly setting loudness values in audio bitstreams delivered on Blu-ray Disc.

Details

Published in
AES Convention 142
AES Convention
142
Paper number
318
Publication date
May 6, 2017
Session subject
Posters: Spatial Audio, Room, Recording, and Listening
Affiliation
Dolby Germany, Nürnberg, Germany; Dolby Laboratories, Inc., San Francisco, CA, USA (See document for exact affiliation information.)
Type
Engineering Brief