Specifications

Standards and Practices for Authoring Dolby
®
Digital and Dolby E Bitstreams
iii
Table of Contents
1 Scope and Purpose ..............................................................................................1
2 Definitions .............................................................................................................1
2.1 Dolby Digital ............................................................................................... 1
2.2 Dolby E.......................................................................................................1
2.3 Metadata .................................................................................................... 2
2.4 Integrated Receiver Decoders (IRD) and Set-Top Boxes (STB) ................2
2.5 Dolby Digital Surround EX..........................................................................2
3 Perceptual Coding vs. Metadata...........................................................................3
3.1 The Sound of Perceptual Coding as Implemented in Dolby Digital .......3
3.2 The Sound of Metadata.............................................................................. 3
3.3 The Three Ds: Dialogue Normalization, Dynamic Range Control,
and Downmixing......................................................................................... 4
3.4 Dialogue Normalization .............................................................................. 4
3.5 Dynamic Range Control ............................................................................. 6
3.6 Downmixing................................................................................................ 8
4 DVD Authoring System Overview ....................................................................... 10
4.1 DP569/DP562 with Dolby Recorder .........................................................10
4.2 DP570/DP569 with Dolby Recorder .........................................................11
4.3 Surround EX Encoding with DP570/DP569/EX-EU4 and
Dolby Recorder ........................................................................................12
5 DTV Authoring Overview ....................................................................................13
5.1 Metadata in Master Control......................................................................13
5.2 DP570/DP571 for Digital Television Distribution ...................................... 14
6 Frequently Asked Questions...............................................................................16