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TR 26.976 (SA4)
Performance Characterization of the
Adaptive Multi-Rate Wideband (AMR-WB) Speech Codec

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Rapporteur:  Dr. Bruhn, Stefan

This TR provides information of the AMR Wideband (AMR-WB) Characterisation, Verification and Selection Phases. Experimental test results from the speech quality related testing are reported to illustrate the behaviour of the AMR-WB codec. Additional information is provided, e.g., on implementation complexity of the AMR-WB codec. Also the verification results for the floating-point version of the AMR-WB codec (TS 26.204) are presented.

full Table of Contents for  TR 26.976  Word version:   15.0.0

 

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1  ScopeWord-p. 7
2  References
3  AbbreviationsWord-p. 10
4  General
5  Performance requirements
6  Introduction to the testing of AMR-WB speech codecWord-p. 13
7  Important notes about the interpretation of test resultsWord-p. 16
8  Performance in self-tandeming and with variation of the input speech level
9  Interoperability Performance in Real World Wideband ScenariosWord-p. 17
10  Interoperability Performance in Real World Narrowband ScenariosWord-p. 19
11  Performance of VAD/DTX/CNG AlgorithmWord-p. 20
12  Performance in Static Errors under Clean Speech Conditions in GSM GMSKWord-p. 21
13  Performance in Background Noise in Static C/I Conditions in GSM GMSKWord-p. 23
14  Performance in Static Errors under Clean Speech Conditions in 3GWord-p. 24
15  Performance in Background Noise in Static C/I Conditions in 3GWord-p. 26
16  Performance in Static Errors under Clean Speech Conditions in GERAN 8-PSK FR and HR channelsWord-p. 28
17  Effects of Bit Rate, Input Level, and VAD/DTX (DCR)Word-p. 30
18  Effects of Bit Rate, Tandeming, and Background Noise (DCR)Word-p. 36
19  Effects of Wideband Coding and Test Method on Music Quality (ACR, DCR)Word-p. 40
20  Performances with DTMF TonesWord-p. 43
21  Performance with Special Input SignalsWord-p. 44
22  Overload PerformanceWord-p. 50
23  Muting Behaviour
24  Language DependencyWord-p. 51
25  Transmission DelayWord-p. 52
26  Frequency ResponseWord-p. 53
27  Signalling TonesWord-p. 55
28  Complexity AnalysisWord-p. 57
29  Comfort Noise GenerationWord-p. 59
30  Performance with music signals (informal expert listening)Word-p. 65
31  Switching Performance between AMR and AMR-WB modesWord-p. 66
A  Detailed information about the AMR-WB selection phaseWord-p. 67
B  AMR-WB Floating-Point VerificationWord-p. 82
C  Change historyWord-p. 105

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