ISO/IEC 23003-4:2015
Information technology — MPEG audio technologies — Part 4: Dynamic Range Control
ISO/IEC 23003-4:2015 specifies technology for loudness and dynamic range control. ISO/IEC 23003-4:2015 is applicable to most MPEG audio technologies. It offers flexible solutions to efficiently support the widespread demand for technologies such as loudness normalization and dynamic range compression for various playback scenarios.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$118.26 NZD
|
|
| HardCopy |
$152.17 NZD
|
|
| Networkable PDF |
Price varies
|
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and mnemonics
3.1 Terms
3.2 Mnemonics
4 Symbols (and abbreviated terms)
5 Technical overview
6 DRC decoder
6.1 DRC decoder configuration
6.1.1 Overview
6.1.2 Description of logical blocks
6.1.3 Derivation of peak and loudness values
6.2 Dynamic DRC gain payload
6.3 DRC set selection
6.3.1 Overview
6.3.2 Pre-selection based on Signal Properties and Decoder Configuration
6.3.3 Selection based on requests
6.3.4 Final selection
6.3.5 Applying multiple DRC sets
6.3.6 Album mode
6.3.7 Ducking
6.3.8 Precedence
6.4 Time domain DRC application
6.4.1 Overview
6.4.2 Framing
6.4.3 Time resolution
6.4.4 Time alignment
6.4.5 Decoding
6.4.6 Gain modifications and interpolation
6.4.7 Spline interpolation
6.4.8 Look-ahead in decoder
6.4.9 Node reservoir
6.4.10 Applying the compression
6.4.11 Multi-band DRC filter bank
6.5 Sub-band domain DRC
6.6 Loudness normalization
6.6.1 Overview
6.6.2 Loudness normalization based on target loudness
6.7 DRC in streaming scenarios
6.7.1 DRC configuration
6.7.2 Error handling
6.8 DRC configuration changes during active processing
7 Syntax
7.1 Syntax of DRC payload
7.2 Syntax of DRC gain payload
7.3 Syntax of static DRC payload
7.4 Syntax of DRC gain sequence
Annex A (normative) Tables
Annex B (normative) External Interface to DRC tool
Annex C (informative) Audio codec specific information
Annex D (informative) DRC gain generation and encoding
Annex E (informative) DRC set selection and adjustment at decoder
Annex F (informative) Loudness normalization
Annex G (informative) Peak limiter
Bibliography
Keep me up-to-date
Register to receive notifications when updates are made to this standard.
Related Information
Similar Standards
-
BS EN 61937-10:2011
Digital audio. Interface for non-linear PCM encoded audio bitstreams applying IEC 60958, Non-linear PCM bitstreams according to the MPEG-4 Audio Lossless Coding (ALS) format
-
BS EN 61937-5:2006
Digital audio. Interface for non-linear PCM encoded audio bitstreams applying IEC 60958, Non-linear PCM bitstreams according to the DTS (digital theatre systems) format(s)
-
BS EN 61937-6:2006+A1:2014
Digital audio. Interface for non-linear PCM encoded audio bitstreams applying IEC 60958, Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC formats
-
BS EN 61937-8:2007
Digital audio. Interface for non-linear PCM encoded audio bitstreams applying IEC 60958, Non-linear PCM bitstreams according to the Windows Media Audio (WMA) Professional format
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and mnemonics
3.1 Terms
3.2 Mnemonics
4 Symbols (and abbreviated terms)
5 Technical overview
6 DRC decoder
6.1 DRC decoder configuration
6.1.1 Overview
6.1.2 Description of logical blocks
6.1.3 Derivation of peak and loudness values
6.2 Dynamic DRC gain payload
6.3 DRC set selection
6.3.1 Overview
6.3.2 Pre-selection based on Signal Properties and Decoder Configuration
6.3.3 Selection based on requests
6.3.4 Final selection
6.3.5 Applying multiple DRC sets
6.3.6 Album mode
6.3.7 Ducking
6.3.8 Precedence
6.4 Time domain DRC application
6.4.1 Overview
6.4.2 Framing
6.4.3 Time resolution
6.4.4 Time alignment
6.4.5 Decoding
6.4.6 Gain modifications and interpolation
6.4.7 Spline interpolation
6.4.8 Look-ahead in decoder
6.4.9 Node reservoir
6.4.10 Applying the compression
6.4.11 Multi-band DRC filter bank
6.5 Sub-band domain DRC
6.6 Loudness normalization
6.6.1 Overview
6.6.2 Loudness normalization based on target loudness
6.7 DRC in streaming scenarios
6.7.1 DRC configuration
6.7.2 Error handling
6.8 DRC configuration changes during active processing
7 Syntax
7.1 Syntax of DRC payload
7.2 Syntax of DRC gain payload
7.3 Syntax of static DRC payload
7.4 Syntax of DRC gain sequence
Annex A (normative) Tables
Annex B (normative) External Interface to DRC tool
Annex C (informative) Audio codec specific information
Annex D (informative) DRC gain generation and encoding
Annex E (informative) DRC set selection and adjustment at decoder
Annex F (informative) Loudness normalization
Annex G (informative) Peak limiter
Bibliography