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TS 26.190 (SA4)
Speech codec speech processing functions –
Adaptive Multi-Rate - Wideband (AMR-WB) speech codec –
Transcoding functions

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(P) V14.0.0    2017/03    53 p.
(P) V13.0.0    2015/12    53 p.
(P) V12.0.0    2014/09    53 p.
(P) V11.0.0    2012/09    53 p.
(P) V10.0.0    2011/04    53 p.
(P) V9.0.0    2009/12    53 p.
(P) V8.0.0    2008/12    53 p.
(P) V7.0.0    2007/06    55 p.
(P) V6.1.1    2005/07    55 p.
(P) V5.1.0    2002/01    55 p.


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


This TS describes the detailed mapping from input blocks of 320 speech samples in 16-bit uniform PCM format to encoded blocks of 132, 177, 253, 285, 317, 365, 397, 461 and 477 bits and from encoded blocks of 132, 177, 253, 285, 317, 365, 397, 461 and 477 bits to output blocks of 320 reconstructed speech samples.

The sampling rate is 16 000 samples/s leading to a bit rate for the encoded bit stream of 6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05 or 23.85 kbit/s. The coding scheme for the multi-rate coding modes is the so-called Algebraic Code Excited Linear Prediction Coder, hereafter referred to as ACELP. The multi-rate wideband ACELP coder is referred to as MRWB-ACELP.


 

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1   Scope   PDF-p. 6
2   Normative references
3   Definitions, symbols and abbreviations
4   Outline description
5   Functional description of the encoder
6   Functional description of the decoder
7   Detailed bit allocation of the adaptive multi-rate wideband codec
8   Homing sequences   PDF-p. 47
9   Bibliography   PDF-p. 50
A   Change history   PDF-p. 51

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