ETSI ETS 300 581-7 ed.1 (1996-01)

Digital cellular telecommunications system; Half rate speech; Part 7: ANSI-C code for the GSM half rate speech codec (GSM 06.06)

DE/SMG-020606

Digitalni celični telekomunikacijski sistem – Govor s polovično hitrostjo – 7. del: Kod ANSI-C za GSM kodek za govor s polovično hitrostjo (GSM 06.06)

General Information

• Status: Published
• Publication Date: 21-Feb-1996
• Technical Committee: SMG 2 - Radio
• Current Stage: 12 - Completion
• Due Date: 06-Mar-1996
• Completion Date: 22-Feb-1996
• Mandate: T-172
• Ref Project: SIST ETS 300 581-7 E1:2003 - Digital cellular telecommunications system; Half rate speech; Part 7: ANSI-C code for the GSM half rate speech codec (GSM 06.06)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 581-7 E1:2003
01-december-2003
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHP±*RYRUVSRORYLþQRKLWURVWMR±GHO
.RG$16,&]D*60NRGHN]DJRYRUVSRORYLþQRKLWURVWMR*60
Digital cellular telecommunications system; Half rate speech; Part 7: ANSI-C code for the
GSM half rate speech codec (GSM 06.06)
Ta slovenski standard je istoveten z: ETS 300 581-7 Edition 1
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST ETS 300 581-7 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 581-7 E1:2003

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SIST ETS 300 581-7 E1:2003
EUROPEAN ETS 300 581-7
TELECOMMUNICATION January 1996
STANDARD
Source: ETSI TC-SMG Reference: DE/SMG-020606
ICS: 33.060.50
CODEC, digital cellular telecommunications system, Global System for Mobile communications
Key words:
(GSM), speech, ANSI-C code
Digital cellular telecommunications system;
Half rate speech;
Part 7: ANSI-C code for the GSM half rate speech codec
(GSM 06.06)
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
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 1996. All rights reserved.
New presentation - see History box

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ETS 300 581-7: January 1996 (GSM 06.06 version 4.0.3)
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 581-7: January 1996 (GSM 06.06 version 4.0.3)
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .7
3.1 Definitions .7
3.2 Abbreviations .7
4 C code structure.8
4.1 Directory structure.8
4.2 Program execution.9
4.3 Code hierarchy.9
History.17

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ETS 300 581-7: January 1996 (GSM 06.06 version 4.0.3)
Foreword
This European Telecommunication Standard (ETS) has been produced by the Special Mobile Group
(SMG) Technical Committee of the European Telecommunications Standards Institute (ETSI).
A 3.5 inch diskette is attached to the back cover of this ETS, this diskette contains clause 5, the bit-exact
ANSI-C code for the GSM half rate codec.
This ETS specifies the half rate speech traffic channels for the European digital cellular
telecommunications system. This ETS corresponds to GSM technical specification, GSM 06.06, version
4.0.3 and is part 7 of a multi-part ETS covering the half rate speech traffic channels as described below:
GSM 06.02 ETS 300 581-1: "Digital cellular telecommunications system; Half rate speech
Part 1: Half rate speech processing functions".
GSM 06.20 ETS 300 581-2: "Digital cellular telecommunications system; Half rate speech
Part 2: Half rate speech transcoding".
GSM 06.21 ETS 300 581-3: "Digital cellular telecommunications system; Half rate speech
Part 3: Substitution and muting of lost frames for half rate speech traffic
channels".
GSM 06.22 ETS 300 581-4: "Digital cellular telecommunications system; Half rate speech
Part 4: Comfort noise aspects for half rate speech traffic channels".
GSM 06.41 ETS 300 581-5: "Digital cellular telecommunications system; Half rate speech
Part 5: Discontinuous Transmission (DTX) for half rate speech traffic channels".
GSM 06.42 ETS 300 581-6: "Digital cellular telecommunications system; Half rate speech
Part 6: Voice Activity Detection (VAD) for half rate speech traffic channels".
GSM 06.06 ETS 300 581-7: "Digital cellular telecommunications system; Half rate
speech Part 7: ANSI-C code for the GSM half rate speech codec".
GSM 06.07 ETS 300 581-8: "Digital cellular telecommunications system; Half rate speech
Part 8: Test vectors for the GSM half rate speech codec".
NOTE: TC-SMG has produced documents which give the technical specifications for the
implementation of the European digital cellular telecommunications system.
Historically, these documents have been identified as GSM Technical Specifications
(GSM-TS). These TSs may have subsequently become Interim European
Telecommunication Standards (I-ETSs), (Phase 1), or European Telecommunication
Standards (ETSs), (Phase 2), whilst others may become ETSI Technical Reports
(ETRs).
Transposition dates
Date of adoption of this ETS: 31 January 1996
Date of latest announcement of this ETS (doa): 30 April 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 October 1996
Date of withdrawal of any conflicting National Standard (dow): 31 October 1996

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SIST ETS 300 581-7 E1:2003
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ETS 300 581-7: January 1996 (GSM 06.06 version 4.0.3)
1 Scope
This European Telecommunication Standard (ETS) part 7 contains an electronic copy of the ANSI-C code
for the GSM half rate codec. The ANSI-C code is necessary for a bit exact implementation of the half rate
speech transcoder (GSM 06.20 (ETS 300 581-2) [2]), Voice Activity Detection (GSM 06.42 (ETS 300 581-
6) [6]), comfort noise (GSM 06.22 (ETS 300 581-4) [4]), Discontinuous Transmission (GSM 06.41 (ETS
300 581-5) [5]) and example solutions for substituting and muting of lost frames (GSM 06.21 (ETS 300
581-3) [3])
2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references, the
latest edition of the publication referred to applies.
[1] GSM 01.04 (ETR 100): "European digital cellular telecommunication system
(Phase 2); Abbreviations and acronyms".
[2] GSM 06.20 (ETS 300 581-2): "Digital cellular telecommunications system; Half
rate speech Part 2: Half rate speech transcoding.".
[3] GSM 06.21 (ETS 300 581-3): "Digital cellular telecommunications system; Half
rate speech Part 3: Substitution and muting of lost frame for half rate speech
traffic channels".
[4] GSM 06.22 (ETS 300 581-4): "Digital cellular telecommunications system; Half
rate speech Part 4: Comfort noise aspects for half rate speech traffic channels".
[5] GSM 06.41 (ETS 300 581-5): "Digital cellular telecommunications system; Half
rate speech Part 5: Discontinuous transmission (DTX) for half rate speech traffic
channels".
[6] GSM 06.42 (ETS 300 581-6): "Digital cellular telecommunications system; Half
rate speech Part 6: Voice Activity Detector (VAD) for half rate speech traffic
channels ".
[7] GSM 06.07 (ETS 300 581-8): "Digital cellular telecommunications system; Half
rate speech Part 8: Test vectors for the GSM half rate speech codec".
[8] American National Standards Institute ANSI 9899 (1990): "Programming
Language - C (ISO)".
3 Definitions and abbreviatio
...