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TS 26.290 (SA4)
Audio codec processing functions –
Extended Adaptive Multi-Rate - Wideband (AMR-WB+) speech codec –
Transcoding functions

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V14.0.0 (PDF)  2017/03  87 p.
V13.0.0  2015/12  87 p.
V12.0.0  2014/09  87 p.
V11.0.0  2012/09  87 p.
V10.0.0  2011/04  87 p.
V9.0.0  2009/10  87 p.
V8.0.0  2008/12  87 p.
V7.0.0  2007/03  87 p.
V6.3.0  2005/06  87 p.

Rapporteur:  Dr. Bruhn, Stefan
See also:  AMR-WB+-related TS/TR

This TS describes the detailed mapping from input blocks of monophonic or stereophonic audio samples in 16 bit uniform PCM format to encoded blocks and from encoded blocks to output blocks of reconstructed monophonic or stereophonic audio samples. The coding scheme is an extension of the AMR-WB coding scheme (TS 26.194) and is referred to as extended AMR-WB or AMR-WB+ codec. It comprises all AMR-WB speech codec modes including VAD/DTX (TS 26.190) as well as extended functionality for encoding general audio signals such as music, speech, mixed, and other signals.


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1  ScopePDF-p. 7
2  References
3  Definitions and abbreviationsPDF-p. 8
4  Outline description
5  Functional description of the encoderPDF-p. 16
5.1  Input signal pre-processing
5.2  Principle of the hybrid ACELP/TCX core encodingPDF-p. 17
5.3  Hybrid ACELP/TCX core encoding descriptionPDF-p. 24
5.4  Mono Signal High-Band encoding (BWE)Up
5.5  Stereo signal encodingPDF-p. 42
5.6  Packetization
6  Functional description of the decoderUp
7  Detailed bit allocation of the Extended AMR-WB codecPDF-p. 72
8  Storage and Transport Interface formatsPDF-p. 78
A  Change historyPDF-p. 85

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