TS 102 114 V1.3.1 (2011-08) Technical Specification
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ETSI TS 102 114 V1.3.1 (2011-08) Technical Specification DTS Coherent Acoustics; Core and Extensions with Additional Profiles 2 ETSI TS 102 114 V1.3.1 (2011-08) Reference RTS/JTC-DTS-R2 Keywords acoustic, audio, codec, coding, digital ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. 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ETSI 3 ETSI TS 102 114 V1.3.1 (2011-08) Contents Intellectual Property Rights ................................................................................................................................ 8 Foreword ............................................................................................................................................................. 8 1 Scope ........................................................................................................................................................ 9 2 References ................................................................................................................................................ 9 2.1 Normative references ......................................................................................................................................... 9 2.2 Informative references ...................................................................................................................................... 10 3 Definitions, abbreviations and document conventions ........................................................................... 10 3.1 Definitions ........................................................................................................................................................ 10 3.2 Abbreviations ................................................................................................................................................... 12 3.3 Document Conventions .................................................................................................................................... 12 4 Summary ................................................................................................................................................ 13 4.1 Overview .......................................................................................................................................................... 13 4.2 Organization of the present document .............................................................................................................. 14 5 Core Audio ............................................................................................................................................. 14 5.1 Frame structure and decoding procedure .......................................................................................................... 15 5.2 Synchronization ................................................................................................................................................ 16 5.3 Frame header .................................................................................................................................................... 16 5.3.1 Bit stream header ........................................................................................................................................ 17 5.3.2 Primary Audio Coding Header ................................................................................................................... 24 5.4 Unpack Subframes ........................................................................................................................................... 28 5.4.1 Primary Audio Coding Side Information .................................................................................................... 28 5.5 Primary Audio Data Arrays .............................................................................................................................. 31 5.6 Unpack Optional Information........................................................................................................................... 33 5.7 Optional Information ........................................................................................................................................ 34 5.7.1 Auxiliary Data ............................................................................................................................................ 34 5.7.2 Rev2 Auxiliary Data Chunk........................................................................................................................ 37 5.7.2.1 Rev2 Auxiliary Data Chunk structure ................................................................................................... 37 5.7.2.2 Description of Rev2 Auxiliary Data Chunk fields ................................................................................ 38 6 Extension to more than 5.1 channels (XCh) ........................................................................................... 41 6.1 X96 Extension .................................................................................................................................................. 41 6.1.1 DTS Core + 96 kHz-Extension Encoder ..................................................................................................... 42 6.1.2 DTS Core + 96 kHz Extension Decoder ..................................................................................................... 43 6.1.3 Extension (X96) Bitstream Components .................................................................................................... 44 6.1.3.1 DTS_BCCORE_X96 Frame Header ..................................................................................................... 45 6.1.3.2 DTS_EXSUB_STREAM_X96 Frame Header ..................................................................................... 46 6.1.3.3 X96 Channel Set Header ....................................................................................................................... 47 6.1.3.4 96 kHz Extension Side Information ...................................................................................................... 52 6.1.3.5 96 kHz Extension Audio Data Arrays ................................................................................................... 52 6.1.3.6 Interpolation of the LFE Channel Samples ........................................................................................... 55 6.2 XBR - Extended Bit Rate Extension ................................................................................................................ 56 6.2.1 DTS Core Substream Encoder + XBR Extension Encoder......................................................................... 57 6.2.2 DTS XBR Bit Rate Extension Decoder ...................................................................................................... 57 6.2.3 Extension (XBR) Bitstream Components ................................................................................................... 58 6.2.4 XBR Frame Header .................................................................................................................................... 59 6.2.5 XBR Channel Set Sub-Header .................................................................................................................... 60 6.2.6 XBR Channel Set Data ............................................................................................................................... 60 6.2.6.1 Subframe Side Information ................................................................................................................... 61 6.2.6.2 XBR Extension Residual Audio Data Arrays ....................................................................................... 62 6.2.7 Assembly of XBR subbands ....................................................................................................................... 63 6.3 Extension