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Convention Paper

Introduction to Dolby Digital Plus, an Enhancement to the Dolby Digital Coding System

Authors: Andersen, Robert L.; Crockett, Brett G.; Davidson, Grant A.; Davis, Mark F.; Fielder, Louis D.; Turner, Stephen C.; Vinton, Mark S.; Williams, Phillip A.

AES Convention 117 · Paper 6196 · October 2004

Abstract

An extension to the existing Dolby Digital (AC-3) multichannel audio coding standard is described and its new capabilities explored. This coding system is designed with extensive compatibility with the existing standard by retaining most of its metadata and data-framing structure to preserve and extend functionality in existing applications. New features include simultaneous support for multiple program streams, carriage of multichannel signals beyond 5.1 channels, and fine-grained control and support for data rates up to 6.144 Mbps. New coding "tools" including spectral extension, enhanced channel coupling, transient pre-noise processing, and improved filterbank/quantization enhance the performance of earlier AC-3 technology.

Details

Published in
AES Convention 117
AES Convention
117
Paper number
6196
Publication date
October 6, 2004
Session subject
Lossy and Lossless Audio Coding
Affiliation
Dolby Laboratories, San Francisco, CA (See document for exact affiliation information.)
Type
Convention Paper