Content for TR 26.976 Word version: 18.0.0
2 References
3 Abbreviations
4 General
5 Performance requirements
6 Introduction to the testing of AMR-WB speech codec
7 Important notes about the interpretation of test results
8 Performance in self-tandeming and with variation of the input speech level
9 Interoperability Performance in Real World Wideband Scenarios
10 Interoperability Performance in Real World Narrowband Scenarios
11 Performance of VAD/DTX/CNG Algorithm
12 Performance in Static Errors under Clean Speech Conditions in GSM GMSK
13 Performance in Background Noise in Static C/I Conditions in GSM GMSK
14 Performance in Static Errors under Clean Speech Conditions in 3G
15 Performance in Background Noise in Static C/I Conditions in 3G
16 Performance in Static Errors under Clean Speech Conditions in GERAN 8-PSK FR and HR channels
17 Effects of Bit Rate, Input Level, and VAD/DTX (DCR)
18 Effects of Bit Rate, Tandeming, and Background Noise (DCR)
19 Effects of Wideband Coding and Test Method on Music Quality (ACR, DCR)
20 Performances with DTMF Tones
21 Performance with Special Input Signals
22 Overload Performance
23 Muting Behaviour
24 Language Dependency
25 Transmission Delay
26 Frequency Response
27 Signalling Tones
28 Complexity Analysis
29 Comfort Noise Generation
30 Performance with music signals (informal expert listening)
31 Switching Performance between AMR and AMR-WB modes
A Detailed information about the AMR-WB selection phase
B AMR-WB Floating-Point Verification
$ Change history
2 References p. 7
3 Abbreviations p. 10
4 General p. 10
4.1 Project history p. 10
4.2 Overview of the wideband codec work item p. 11
4.3 Presentation of the following clauses p. 12
5 Performance requirements p. 12
6 Introduction to the testing of AMR-WB speech codec p. 13
6.1 AMR-WB Characterisation Phase p. 13
6.2 AMR-WB Verification Phase p. 15
6.3 AMR-WB floating-point verification phase p. 15
7 Important notes about the interpretation of test results p. 16
8 Performance in self-tandeming and with variation of the input speech level p. 16
9 Interoperability Performance in Real World Wideband Scenarios p. 17
10 Interoperability Performance in Real World Narrowband Scenarios p. 19
11 Performance of VAD/DTX/CNG Algorithm p. 20
12 Performance in Static Errors under Clean Speech Conditions in GSM GMSK p. 21
13 Performance in Background Noise in Static C/I Conditions in GSM GMSK p. 23
14 Performance in Static Errors under Clean Speech Conditions in 3G p. 24
15 Performance in Background Noise in Static C/I Conditions in 3G p. 26
16 Performance in Static Errors under Clean Speech Conditions in GERAN 8-PSK FR and HR channels p. 28
17 Effects of Bit Rate, Input Level, and VAD/DTX (DCR) p. 30
18 Effects of Bit Rate, Tandeming, and Background Noise (DCR) p. 36
19 Effects of Wideband Coding and Test Method on Music Quality (ACR, DCR) p. 40
20 Performances with DTMF Tones p. 43
21 Performance with Special Input Signals p. 44
21.1 Arbitrary signal p. 44
21.2 Bursty random noise signals p. 45
21.3 Background noise signals p. 45
21.4 Sinusoidal signals p. 48
21.5 Square wave signals p. 48
21.6 All zero signal p. 49
21.7 Long speech signal (radio play) p. 49
21.8 Sinusoidal signals with bad frames p. 49
21.9 Summary p. 49
22 Overload Performance p. 50
23 Muting Behaviour p. 50
24 Language Dependency p. 51
25 Transmission Delay p. 52
26 Frequency Response p. 53
27 Signalling Tones p. 55
28 Complexity Analysis p. 57
29 Comfort Noise Generation p. 59
29.1 VAD p. 59
29.2 Voice/Channel activity p. 60
29.3 Clipping p. 62
29.4 Comfort Noise Synthesis p. 63
29.5 Summary p. 64
30 Performance with music signals (informal expert listening) p. 65
31 Switching Performance between AMR and AMR-WB modes p. 66
A Detailed information about the AMR-WB selection phase p. 67
A.1 Performance requirements p. 67
A.1.1 GSM FR channel (applications A and B) p. 67
A.1.2 Higher rate channels (applications C and E) p. 68
A.1.3 Other requirements and objectives p. 69
A.1.4 Testing of performance requirements in the selection tests p. 69
A.2 Selection procedure and methodology for comparison of candidates p. 69
A.3 Selection phase listening tests p. 71
A.3.1 Overview of the test plan p. 72
A.3.2 Schedule of the selection tests and related activities p. 73
A.4 Results of the selection tests p. 74
A.4.1 Comparison against performance requirements p. 74
A.4.2 Direct comparison of candidates p. 75
A.4.3 Conclusions on the AMR-WB codec candidates p. 75
A.5 Highlights of the best candidate codec (Codec 3) based on the selection tests p. 76
A.6 Key Selection Phase Documents in 3GPP FTP-site p. 76
A.7 Extracts from the AMR-WB Selection Test Results p. 77
A.8 Global Analysis Spreadsheet p. 80
A.9 Complexity of the AMR-WB Candidate Codecs p. 80
B AMR-WB Floating-Point Verification p. 82
B.1 Subjective test results p. 82
B.2 Non-speech signals p. 83
B.3 Bit-Exactness, Idle-Channel Behaviour and Long-Term Stability Performance p. 84
B.4 Music Performance (Expert Listening Tests) p. 85
B.5 Overload Performance p. 85
B.6 Transparency of Codec for DTMF signals p. 86
B.7 Perceptual Evaluation of Speech Quality (PESQ) p. 90
B.8 Operation of the VAD and comfort noise p. 98
$ Change history p. 105
