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SIST EN 300 395-1 V1.2.1:2006

(Main)

Terrestrial Trunked Radio (TETRA); Speech codec for full-rate traffic channel; Part 1: General description of speech functions

Terrestrial Trunked Radio (TETRA); Speech codec for full-rate traffic channel; Part 1: General description of speech functions

The present document is an introduction to the other parts of this multi-part deliverable dealing with the speech processing functions in the TETRA system. In addition to this introduction, the present document contains the full specification of the speech CODEC including provisions for specific cases of operation and optional functionalities  plus CODEC conformance testing. The present document also contains the full specification for the optional AMR CODEC as implemented within the TETRA system. In the present document, a general overview of the speech processing parts is given with reference to the multi-part deliverable where each part is specified in detail.

Prizemni snopovni radio (TETRA) – Govorni kodek za prometni kanal s polno hitrostjo – 1. del: Splošni opis govornih funkcij

General Information

Status
Published
Publication Date
31-Mar-2006
ICS
33.070.10 - Terrestrial Trunked Radio (TETRA)
Technical Committee
SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Apr-2006
Due Date
01-Apr-2006
Completion Date
01-Apr-2006
Ref Project
ETSI EN 300 395-1 V1.2.1 (2005-01) - Terrestrial Trunked Radio (TETRA); Speech codec for full-rate traffic channel; Part 1: General description of speech functions

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SLOVENSKI STANDARD
SIST EN 300 395-1 V1.2.1:2006
01-april-2006
Prizemni snopovni radio (TETRA) – Govorni kodek za prometni kanal s polno
hitrostjo – 1. del: Splošni opis govornih funkcij
Terrestrial Trunked Radio (TETRA); Speech codec for full-rate traffic channel; Part 1:
General description of speech functions
Ta slovenski standard je istoveten z: EN 300 395-1 Version 1.2.1
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
SIST EN 300 395-1 V1.2.1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 395-1 V1.2.1:2006

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SIST EN 300 395-1 V1.2.1:2006

ETSI EN 300 395-1 V1.2.1 (2005-01)
European Standard (Telecommunications series)


Terrestrial Trunked Radio (TETRA);
Speech codec for full-rate traffic channel;
Part 1: General description of speech functions

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SIST EN 300 395-1 V1.2.1:2006
 2 ETSI EN 300 395-1 V1.2.1 (2005-01)



Reference
REN/TETRA-05113-1
Keywords
TETRA, codec
ETSI
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Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
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If you find errors in the present document, please send your comment to one of the following services:
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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.

© European Telecommunications Standards Institute 2005.
All rights reserved.

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DECT , PLUGTESTS and UMTS are Trade Marks of ETSI registered for the benefit of its Members.
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3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI

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SIST EN 300 395-1 V1.2.1:2006
 3 ETSI EN 300 395-1 V1.2.1 (2005-01)
Contents
Intellectual Property Rights.4
Foreword.4
1 Scope.5
2 References.5
3 Definitions and abbreviations.5
3.1 Definitions.5
3.2 Abbreviations.5
4 General.6
5 Full rate speech CODEC .6
6 Speech control unit.8
6.1 Lost frame aspects.8
6.2 Comfort noise aspects .8
6.3 Importance parameter.8
6.4 Homing function.8
7 Conformance testing.8
8 AMR speech codec.9
Annex A (informative): Bibliography.10
History .11

ETSI

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SIST EN 300 395-1 V1.2.1:2006
 4 ETSI EN 300 395-1 V1.2.1 (2005-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Project Terrestrial Trunked Radio
(TETRA).
The present document is part 1 of a multi-part deliverable covering speech codec for full-rate traffic channel, as
identified below:
Part 1: "General description of speech functions";
Part 2: "TETRA codec";
Part 3: "Specific operating features";
Part 4: "Codec conformance testing".

National transposition dates
Date of adoption of this EN: 21 January 2005
Date of latest announcement of this EN (doa): 30 April 2005
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 October 2005
Date of withdrawal of any conflicting National Standard (dow): 31 October 2005

ETSI

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SIST EN 300 395-1 V1.2.1:2006
 5 ETSI EN 300 395-1 V1.2.1 (2005-01)
1 Scope
The present document is an introduction to the other parts of this multi-part deliverable dealing with the speech
processing functions in the TETRA system. In addition to this introduction, the present document contains the full
specification of the speech CODEC including provisions for specific cases of operation and optional functionalities plus
CODEC conformance testing. The present document also contains the full specification for the optional AMR CODEC
as implemented within the TETRA system. In the present document, a general overview of the speech processing parts
is given with reference to the multi-part deliverable where each part is specified in detail.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] ETSI TS 126 090: "Universal Mobile Telecommunications System (UMTS); Mandatory Speech
Codec speech processing functions AMR Speech Codec - Transcoding functions
(3GPP TS 26.090 Release 4)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in EN 300 392-2, clause 3 apply.
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in EN 300 392-2, clause 3 and the following apply:
ACELP Algebraic CELP
AMR Advanced Multi-Rate
BS Base Station
CELP Code-Excited Linear Predictive
MFG Missing Frame Generation
MFS Missing Frame Substitution
MS Mobile Station
PCM Pulse Code Modulated
SCR Source Controlled Rate
ETSI

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SIST EN 300 395-1 V1.2.1:2006
 6 ETSI EN 300 395-1 V1.2.1 (2005-01)
4 General
Figure 1 illustrates a refe
...

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The objective of the present document is to define the conformance bounds for the TETRA speech and channel codec as deployed in the TETRA Speech Traffic Channel (TCH/S) channel type used in the TETRA Voice plus Data (V+D) equipment. For the speech part of the TCH/S codec, the conformance testing (clause 7 of the present document) consists of a bit-exact test where the reference is pre-computed and fixed. For the TCH/S channel encoding a bit exact conformance test is also defined (see clause 6.4). For the TCH/S channel decoding, a non-bit exact test is employed with the specifications designed such that a sufficient quality of performance is met by the TETRA equipment (see clause 6.3).

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ETSI EN 300 392-12-16 V1.2.1 (2004-09)

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