3GPP TS 26.131 V9.3.0 (2010-03)
Technical Specification
3rd Generation Partnership Project; Technical Specification Group Services and System Aspects;
Terminal acoustic characteristics for telephony;
Requirements
(Release 9)
The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP. The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be implemented.
This Specification is provided for future development work within 3GPP only. The Organizational Partners accept no liability for any use of this Specification. Specifications and reports for implementation of the 3GPP TM system should be obtained via the 3GPP Organizational Partners' Publications Offices.
Keywords
UMTS, terminal, telephony, acoustic, LTE
3GPP
Postal address
3GPP support office address
650 Route des Lucioles - Sophia Antipolis
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Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Internet
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© 2010, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
All rights reserved.
UMTS™ is a Trade Mark of ETSI registered for the benefit of its members
3GPP™ is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners
LTE™ is a Trade Mark of ETSI currently being registered for the benefit of i ts Members and of the 3GPP Organizational Partners GSM® and the GSM logo are registered and owned by the GSM Association
Contents
Foreword (5)
Introduction (5)
1Scope (6)
2References (6)
3Definitions, symbols and abbreviations (7)
3.1Definitions (7)
3.2Abbreviations (7)
4Interfaces (7)
5Narrow-band telephony transmission performance (8)
5.1Applicability (8)
5.2Overall loss/loudness ratings (8)
5.2.1General (8)
5.2.2Connections with handset UE (9)
5.2.3Connections with Desktop and Vehicle-mounted hands-free UE (9)
5.2.4Connections with handheld hands-free UE (9)
5.2.5Connections with headset UE (9)
5.3Idle channel noise (handset and headset UE) (10)
5.3.1Sending (10)
5.3.2Receiving (10)
5.4Sensitivity/frequency characteristics (10)
5.4.1Handset and headset UE sending (10)
5.4.2Handset and headset UE receiving (11)
5.4.3Desktop and Vehicle-mounted hands-free UE sending (11)
5.4.4Desktop and Vehicle-mounted hands-free UE receiving (11)
5.4.5Handheld hands-free UE sending (12)
5.4.6Handheld hands-free UE receiving (12)
5.5Sidetone characteristics (handset and headset UE) (13)
5.5.1Sidetone loss (13)
5.6Stability loss (13)
5.7Acoustic echo control (14)
5.7.1General (14)
5.7.2Acoustic echo control in an Desktop and Vehicle-mounted hands-free UE (14)
5.7.3Acoustic echo control in an handheld hands-free UE (14)
5.7.4Acoustic echo control in a handset UE (14)
5.7.5Acoustic echo control in a headset UE (14)
5.8Distortion (14)
5.8.1Sending Distortion (14)
5.8.2Receiving (15)
5.9Ambient Noise Rejection (15)
5.10Information on other Parameters (not normative) (17)
6 Wideband telephony transmission performance (18)
6.1Applicability (18)
6.2Overall loss/loudness ratings (18)
6.2.1General (18)
6.2.2Connections with handset UE (18)
6.2.3Connections with Desktop and Vehicle-mounted hands-free UE (18)
6.2.4Connections with handheld hands-free UE (19)
6.2.5Connections with headset UE (19)
6.3Idle channel noise (handset and headset UE) (19)
6.3.1Sending (19)
6.3.2Receiving (19)
6.3.2.1Receiving: total noise level (19)
6.3.2.2Receiving: noise level in 1/3-octave band (20)
6.4Sensitivity/frequency characteristics (20)
6.4.1Handset and headset UE sending (20)
6.4.2Handset and headset UE receiving (20)
6.4.3Desktop and Vehicle-mounted hands-free UE sending (21)
6.4.4Desktop and Vehicle-mounted hands-free UE receiving (21)
6.4.5Handheld hands-free UE sending (22)
6.4.6Handheld hands-free UE receiving (23)
6.5Sidetone characteristics (handset and headset UE) (23)
6.5.1Sidetone loss (23)
6.5.2Sidetone delay (23)
6.6Stability loss (24)
6.7Acoustic echo control (24)
6.7.1General (24)
6.7.2Acoustic echo control in an Desktop and Vehicle-mounted hands-free UE (24)
6.7.3Acoustic echo control in an handheld hands-free UE (24)
6.7.4Acoustic echo control in a handset UE (24)
6.7.5Acoustic echo control in a headset UE (25)
6.8Distortion (25)
6.8.1Sending Distortion (25)
6.8.2Receiving (25)
6.9Ambient Noise rejection (26)
Annex A (informative): Change history (27)
headsetForeword
This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows:
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
Introduction
The present document specifies minimum performance requirements for the acoustic characteristics of 3G terminals when used to provide narrow-band or wideband telephony.
The objective for narrow-band services is to reach a quality as close as possible to ITU-T standards for PSTN circuits. However, due to technical and economic factors, there cannot be full compliance with th
e general characteristics of international telephone connections and circuits recommended by the ITU-T.
The performance requirements are specified the main body of the text; the test methods and considerations are described in TS 26.132.

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