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TR 26.975 (SA4)
Performance characterization of the
Adaptive Multi-Rate (AMR) speech codec

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(P) V14.0.0    2017/03    65 p.
(P) V13.0.0    2015/12    65 p.
(P) V12.0.0    2014/09    65 p.
(P) V11.0.0    2012/09    65 p.
(P) V10.0.0    2011/04    65 p.
(P) V9.0.0    2009/12    65 p.
(P) V8.0.0    2008/12    65 p.
(P) V7.0.0    2007/06    65 p.
(P) V6.0.0    2005/01    65 p.
(P) V5.0.0    2002/06    65 p.
(P) V4.1.0    2001/10    65 p.
(P) V3.1.0    2001/10    57 p.


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


This TR provides background information on the performances of the Adaptive Multi-Rate (AMR) speech codec. Experimental test results from the Verification and Characterization phases of testing are reported to illustrate the behavior of AMR in multiple operational conditions.



 

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1   Scope   PDF-p. 6
2   References
3   Definitions and abbreviations   PDF-p. 7
4   General   PDF-p. 9
5   Quality in Clean Speech and Error Conditions   PDF-p. 13      Up
6   Quality under background noise and Errors Conditions   PDF-p. 16
7   Performances in Tandeming and with variation of the input speech level   PDF-p. 19
8   Performances with the Codec Adaptation turned on   PDF-p. 21
9   VAD/DTX Performances   PDF-p. 23
10   Performances with DTMF tones   PDF-p. 24
11   Transparency to Signaling tones   PDF-p. 26
12   Performances with special input signals   PDF-p. 27
13   Language Dependency   PDF-p. 28
14   Transmission Delay
15   Frequency Response   PDF-p. 33      Up
16   Complexity   PDF-p. 34
A   AMR GSM Characterization Phase Overview   PDF-p. 37
B   AMR Verification Phase Overview   PDF-p. 40
C   Additional Characterization Test Results   PDF-p. 41
D   AMR Performances as a function of FER and RBER   PDF-p. 47
E   AMR Characterization in 3G Channels   PDF-p. 54      Up
F   Change history   PDF-p. 63

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