Download ARIB STD-T64-C.S0018-E v2.0 Minimum Performance Specification

3GPP2 C.S0018-E v2.0
CONTENTS
1
2
1
Introduction.................................................................................................................................. 1-1
3
1.1
Scope .................................................................................................................................... 1-2
4
1.2
Requirements Language ...................................................................................................... 1-3
5
1.3
References ........................................................................................................................... 1-3
6
1.3.1
Normative References ................................................................................................... 1-3
7
1.3.2
Informative References .................................................................................................. 1-4
8
1.4
Definitions ............................................................................................................................. 1-5
9
1.5
Test Model for the Speech Codec ........................................................................................ 1-7
10
11
12
13
2
Codec Minimum Standards ......................................................................................................... 2-1
2.1
Performance Testing for SO 3 .............................................................................................. 2-1
2.1.1
Objective Performance Testing for SO 3 ....................................................................... 2-1
2.1.1.1
Average Data Rate Test .......................................................................................... 2-1
14
2.1.1.1.1
Average Data Rate Computation ........................................................................ 2-1
15
2.1.1.1.2
Average Data Rate Requirement........................................................................ 2-2
16
2.1.1.2
Unity Gain Requirement .......................................................................................... 2-2
17
2.1.1.3
End-to-end Algorithmic Delay Recommendation ..................................................... 2-2
18
2.1.2
Subjective Performance Testing for SO 3 ...................................................................... 2-2
19
2.1.2.1
Definition .................................................................................................................. 2-3
20
2.1.2.2
Method of Measurement .......................................................................................... 2-3
21
2.1.2.3
Test Conditions and Test Design for SO 3 Listening Experiments ......................... 2-3
22
2.1.2.3.1
Subjective Experiment I for SO 3 ....................................................................... 2-3
23
2.1.2.3.2
Subjective Experiment II for SO 3 ...................................................................... 2-5
24
2.1.2.3.3
Numerical Parameters for SO 3 Listening Experiments ..................................... 2-7
25
2.1.3
Source Speech Material for SO 3 Testing...................................................................... 2-7
26
2.1.3.1
Source Speech Material for Experiment I ................................................................ 2-7
27
2.1.3.2
Source Speech Material for Experiment II ............................................................... 2-8
28
2.1.4
Processing of Speech Material for SO 3 Testing ........................................................... 2-8
29
2.1.4.1
Encoding by the Test Codec .................................................................................... 2-9
30
2.1.4.2
Decoding by the Master/Test Codecs...................................................................... 2-9
31
2.1.4.3
Introduction of Impairments ..................................................................................... 2-9
32
2.1.4.4
Tandem Conditions ................................................................................................. 2-9
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