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TS 26.131 (SA4)
Terminal Acoustic Characteristics for Telephony –
Requirements

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V16.0.0 (Wzip)2019/09  75 p.
V15.2.0 (PDF)2019/09  77 p.
V14.2.02019/09  77 p.
V13.4.0  2017/06  73 p.
V12.5.0  2016/03  67 p.
V11.3.0  2013/12  41 p.
V10.5.0  2013/12  36 p.
V9.5.0  2013/12  30 p.
V8.3.0  2011/04  29 p.
V7.1.0  2007/12  27 p.
V6.1.0  2007/03  27 p.
V5.2.0  2002/09  27 p.
V4.2.0  2002/09  18 p.
V3.4.0  2002/09  18 p.

Rapporteur:  Mr. Usai, Paolino

This TS is applicable to any terminal capable of supporting narrow-band or wideband telephony, either as a stand-alone service or as the telephony component of a multimedia service. This TS specifies minimum performance requirements for the acoustic characteristics of 3G terminals when used to provide narrow-band or wideband telephony.
The set of minimum performance requirements enables a guaranteed level of speech quality while taking possible physical limits of the terminal design into account. Some performance objectives are also defined, if such design limits can be overcome. Care must be taken in applying performance objectives in isolation, not to degrade overall end-user speech quality.

full Table of Contents for  TS 26.131  Word version:   16.0.0

 

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1  ScopeWord-p. 8
2  References
3  Definitions, symbols and abbreviationsWord-p. 9
4  InterfacesWord-p. 10
5  Narrowband telephony transmission performanceWord-p. 11
5.1  Applicability
5.2  Overall loss/loudness ratings
5.3  Idle channel noise (handset and headset UE)Word-p. 13
5.4  Sensitivity/frequency characteristics
5.5  Sidetone characteristics (handset and headset UE)Word-p. 19
5.6  Stability lossWord-p. 20
5.7  Acoustic echo controlUp
5.8  Distortion
5.9Void
5.10  Information on other parameters (not normative)Word-p. 23
5.11  Sending performance in the presence of ambient noise [R11]Up
5.12  Delay [R11]Word-p. 24
5.13  Echo control characteristics [R11]Up
5.14  Clock accuracy [R14]
5.15  Jitter buffer management behaviour [R14]Word-p. 28
6  Wideband telephony transmission performance [R5]
6.1  Applicability
6.2  Overall loss/loudness ratings
6.3  Idle channel noise (handset and headset UE)
6.4  Sensitivity/frequency characteristicsWord-p. 31
6.5  Sidetone characteristics (handset and headset UE)Word-p. 37
6.6  Stability lossUp
6.7  Acoustic echo controlWord-p. 38
6.8  Distortion
6.9Void
6.10  Sending performance in the presence of ambient noise [R11]Word-p. 41
6.11  Delay [R11]
6.12  Echo control characteristics [R11]Up
6.13  Clock accuracy [R14]
6.14  Jitter buffer management behaviour [R14]Word-p. 46
7  Super-wideband telephony transmission performance [R12]
7.1  Applicability
7.2  Overall loss/loudness ratings
7.3  Idle channel noise (handset and headset UE)
7.4  Sensitivity/frequency characteristicsWord-p. 49
7.5  Sidetone characteristics (handset and headset UE)Word-p. 55
7.6  Stability loss
7.7  Acoustic echo control
7.8  DistortionWord-p. 58
7.9Void
7.10  Sending performance in the presence of ambient noiseWord-p. 59
7.11  Delay
7.12  Echo control characteristics
7.13  Clock accuracy [R14]
7.14  Jitter buffer management behaviour [R14]Word-p. 65
8  Fullband telephony transmission performance [R12]Up
8.1  Applicability
8.2  Overall loss/loudness ratings
8.3  Idle channel noise (handset and headset UE)Up
8.4  Sensitivity/frequency characteristics
8.5  Sidetone characteristics (handset and headset UE)
8.6  Stability loss
8.7  Acoustic echo control
8.8  Distortion
8.9Void
8.10  Sending performance in the presence of ambient noise
8.11  DelayWord-p. 69
8.12  Echo control characteristics
8.13  Clock accuracy [R14]
8.14  Jitter buffer management behaviour [R14]Word-p. 72
A  Change historyWord-p. 73

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