ETSI EN 301 703-1999 Digital Cellular Telecommunications System (Phase 2+) Adaptive Multi-Rate (AMR) Speech Processing Functions General Description (GSM 06 71 Version 7 0 2 Releas_1.pdf
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1、 STD-ETSI EN 303 703-ENGL 1999 3400855 0483403 T42 ETSI EN 301 703 V7.0.2 (1999-12) European Standard (Telecommunications series) Digital cellular telecommunications system (Phase 2+); Adaptive Multi-Rate (AMR); Speech processing functions; General description (GSM 06.71 version 7.0.2 Release 1998)
2、STD=ETSI EN 30L 703-ENGL 1999 3400855 0483402 989 (GSM 06.71 version 7.0.2 Release 1998) 2 ETSI EN 301 703 V7.0.2 (1999-12) Reference DEN/SMG-110671 Q7 Kevwords Digital cellular telecommunications system, Global System for Mobile communications (GSM) ETSI Postal address F-O6921 Sophia Antipolis Cede
3、x - FRANCE Office address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistree a la Sous-Prefecture de Grasse (06) N“ 7803/88 Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Internet secretanatetsi.fr Individual cop
4、ies of this ETSI deliverable can be downloaded from http:llwww.etsi.org If yw find errors in the present document, send your comment to: editoretsi.fr Important notice This ETSI deliverable may be made available in more than one electronic version or in print. In any case of existing or perceived di
5、fference 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 Secreariat. Copyright Notification No part may be reproduc
6、ed except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 1999. All rights reserved. - STD.ETS1 EN 301 703-ENGL L999 = 3400855 0483403 8L5 (GSM 06.71 version 7.0.2 Release 1998) 3
7、ETSI EN 301 703 V7.0.2 (1999-12) Con tents Intellectual Property Rights 4 Foreword . 4 1 2 3 3.1 3.2 4 5 5.1 5.2 6 7 8 9 10 5 References 5 Definitions and abbreviations . .6 Definitions . 6 Abbreviations . 6 General . . Adaptive multi-rate speech channel transcoding . 8 Full rate channel . Adaptive
8、multi-rate speech channel discontinuous transmission (DTX) .9 Adaptive multi-rate speech channel Voice Activity Detection (VAD) . 10 Adaptive multi-rate speech channel comfort noise insertion. . -10 Adaptive multi-rate speech channel lost speech hme substitution and muting . 1 1 Adaptive multi-rate
9、codec homing . 1 I History . .12 (GSM 06.71 version 7.0.2 Release 1998) 4 ETSI EN 301 703 V7.0.2 (1999-12) 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 publi
10、cly available for ETSI members and non-members, and can be found in SR O00 3 14: “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 s
11、erver (http:/www.etsi .org/ipr) . 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 SR O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may be
12、come, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by Special Mobile Group (SMG). The present document introduces the Adaptive Multi-Rate (AMR) speech traffic channels within the digital cellular telecommunications system. The conte
13、nts of the present document is subject to continuing work within SMG and may change following formal SMG approval. Should SMG modi the contents of the present document it will be re-released with an identifjmg change of release date and an increase in version number as follows: Version 7.x.y where:
14、7 indicates Release 1998 of GSM Phase 2+ x the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. y the third digit is incremented when editorial only changes have been incorporated in the specification. National transposition dates Date
15、 of adoption of this EN: Date of latest announcement of this EN (doa): Date of latest publication of new National Standard or endorsement of this EN (dop/e): Date of withdrawal of any conflicting National Standard (dow): 3 December 1999 31 March 2000 30 September 2000 30 September 2000 STD.ETSI EN 3
16、01 703-ENGL 1999 m 3400855 0483405 by8 (GSM 06.71 version 7.0.2 Release 1998) 5 ETSI EN 301 703 V7.0.2 (1999-12) I Scope The present document is an introduction to GSM 04.90 7, GSM 06.91 8, GSM 06.92 9, GSM 06.93 IO and GSM 06.94 1 11 specifications dealing with the speech processing functions in th
17、e adaptive multi-rate channel of the GSM system. A general overview of the speech processing functions is given, with reference to the documents where each function is specified in detail. 2 References The following documents contain provisions which, through reference in this text, constitute provi
18、sions of the present document. References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to
19、an ETS shall also be taken to refer to later versions published as an EN with the same number. For this Release 1998 document, references to GSM documents are for Release 1998 versions (version 7.x.y). Il GSM 01.04: “Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms“.
20、 GSM 03 SO: “Digital cellular telecommunications system (Phase 2+); Transmission planning aspects of the speech service in the GSM Public Land Mobile Network (PLMN) system“. GSM 05.09: “Digital cellular telecommunications system (Phase 2+); Link adaptation“ GSM 05.03: “Digital cellular telecommunica
21、tions system (Phase 2+); Channel coding“. GSM 06.73: “Digital cellular telecommunications system (Thase 2+); ANSI-C code for the GSM Adaptive Multi-Rate speech codec“. GSM 06.74: “Digital cellular telecommunications system (Phase 2+); Test sequences for the GSM Adaptive Multi-Rate speech codec“. GSM
22、 06.90: “Digital cellular telecommunications system (Phase 2+); Adaptive Multi-Rate speech transcoding“ . GSM 06.91 : “Digital cellular telecommunications system (Phase 2+); Substitution and muting of lost frame for Adaptive Multi-Rate speech traffic channels“. GSM 06.92: “Digital cellular telecommu
23、nications system (Phase 2+); Comfort noise aspects for Adaptive Multi-Rate speech traffic channels“. GSM 06.93: “Digital cellular telecommunications system (Phase 2+); Discontinuous transmission (DTX) for Adaptive Multi-Rate speech traffic channels“. GSM 06.94: “Digital cellular telecommunications s
24、ystem (Phase 2+); Voice Activity Detection (VAD) for Adaptive Multi-Rate speech traffic channels“. i23 i31 41 51 61 71 81 91 IO1 ill STDmETSI EN 301 703-ENGL 1999 - 3400855 O483406 524 (GSY 06.71 version 7.0.2 Release 1998) 6 ETSI EN 301 703 V7.0.2 (1999-12) 3 Definitions and abbreviations 3.1 Defin
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