ANSI SCTE 242-4-2018 pdf free download.Next Generation Audio Coding Constraints for Cable Systems: Part 4 – DTS-UHD Audio Coding Constraints
1.1. Scope
This document is part four of a multi-part standard that specifies the coding constraints of Next
Generation Audio system for cable television. In conjunction with SCTE 242-1 [1], this document defines the coding constraints on DTS-UHD for cable television. The carriage of the streams described in this specification is defined in SCTE 243-4 [8] in conjunction with SCTE 243-1[7].
2. Normative References
The following documents contain provisions, which, through reference in this text, constitute provisions of this document. At the time of Subcommittee approval, the editions indicated were valid. All documents are subject to revision; and while parties to any agreement based on this document are encouraged to investigate the possibility of applying the most recent editions of the documents listed below, they are reminded that newer editions of those documents might not be compatible with the referenced version.
2.1. SCTE References
[1] ANSI/SCTE 242-1 2017, Next Generation Audio Coding Constraints for Cable Systems: Part 1 –
Introduction and Common Constraints
2.2. Standards from Other Organizations
[2] ATSC Standard A/342-1:2017, A/342 Part 1, Audio Common Elements
[3] ETSI TS 103 491 V1.1.1 (2017-04), DTS-UHD Audio Format; Delivery of Channels, Objects and
Ambisonic Sound Fields
[4] Recommendation ITU-R BS.1770-4 (2015-10), Algorithms to measure audio programme loudness
and true-peak audio level
[5] DVB BlueBook A038 (2017-12), Digital Video Broadcasting (DVB); Specification for Service
Information (SI) in DVB systems (Final draft of ETSI EN 300 468 v 1.16.1)
[6] ISO/IEC 639-2:1998, “Codes for the representation of names of languages – Part 2: Alpha-3 code”
2.3. Published Materials
• No normative references are applicable.
3. Informative References
The following documents might provide valuable information to the reader but are not required when
complying with this document.
3.1. SCTE References
[7] ANSI/SCTE 243-1 2017, Next Generation Audio Carriage Constraints for Cable Systems: Part 1 –
Common Transport Signaling
[8] SCTE 243-4 2018, Next Generation Audio Carriage Constraints for Cable Systems: Part 4 – DTS-
UHD Audio Carriage Constraints
3.2. Standards from Other Organizations
[9] ETSI TS 103 584 V1.1.1 (2018-01), DTS-UHD Point Source Renderer
[10] ATSC Doc A/85:2013, Techniques for Establishing and Maintaining Audio Loudness for
Digital Television
3.3. Published Materials
• No informative references are applicable.
4. Compliance Notation
shall This word or the adjective “required” means that the item is an absolute requirement of this document. shall not This phrase means that the item is an absolute prohibition of this document. forbidden This word means the value specified shall never be used. should This word or the adjective “recommended” means that there may exist valid reasons in particular circumstances to ignore this item, but the full implications should be understood and the case carefully weighted before choosing a different course. should not This phrase means that there may exist valid reasons in particular circumstances when the listed behavior is acceptable or even useful, but the full implications should be understood and the case carefully weighed before implementing any behavior described with this label. may This word or the adjective “optional” means that this item is truly optional. One vendor may choose to include the item because a particular marketplace requires it or because it enhances the product, for example; another vendor may omit the same item. deprecated Use is permissible for legacy purposes only. Deprecated features may be removed from future versions of this document. Implementations should avoid use of deprecated features.
6. DTS-UHD System Description
The DTS-UHD coding system is the third generation of DTS audio delivery formats. It is designed to both improve efficiency and deliver a richer set of features than the second generation DTS system. The first two generations of DTS codecs were designed primarily for Channel Based Audio (CBA). DTS- UHD is primarily designed to support audio objects, where a given object can represent a channel based presentation, sound field channels, or audio objects used in Object Based Audio (OBA).
