ETS 300 965 : 20002
Current
The latest, up-to-date edition.
DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - FULL RATE SPEECH - VOICE ACTIVITY DETECTOR (VAD) FOR FULL RATE SPEECH TRAFFIC CHANNELS
Hardcopy , PDF
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Foreword
0.1 Scope
0.2 Normative references
0.3 Abbreviations
1 General
2 Functional description
2.1 Overview and principles of operation
2.2 Algorithm description
3 Computational details
3.1 Adaptive filtering and energy computation
3.2 ACF averaging
3.3 Predictor values computation
3.4 Spectral comparison
3.5 Periodicity detection
3.6 Threshold adaptation
3.7 VAD decision
3.8 VAD hangover addition
3.9 Periodicity updating
3.10 Tone detection
4 Digital test sequences
4.1 Test configuration
4.2 Test sequences
Annex A (informative)
Annex B (normative): Test sequences diskette
History
Specifies the Voice Activity Detector (VAD) to be used in the Discontinuous Transmission (DTX). It also specifies the test methods to be used to verify that a VAD complies with the technical specification. The requirements are mandatory on any VAD to be used either in the GSM Mobile Stations (MS)s or Base Station Systems (BSS)s.
| Committee |
SMG 11
|
| DocumentType |
Standard
|
| Pages |
37
|
| PublisherName |
European Telecommunications Standards Institute
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| PN ETS 300 965 : 2005 | Identical |
| ETS 300 903 : 20004 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - TRANSMISSION PLANNING ASPECTS OF THE SPEECH SERVICE IN THE GSM PUBLIC LAND MOBILE NETWORK (PLMN) SYSTEM |
| ETS 300 964 : 20001 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM; FULL RATE SPEECH; DISCONTINUOUS TRANSMISSION (DTX) FOR FULL RATE SPEECH TRAFFIC CHANNELS |
| ETS 300 737 : 20002 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); IN-BAND CONTROL OF REMOTE TRANSCODERS AND RATE ADAPTORS FOR ENHANCED FULL RATE (EFR) AND FULL RATE TRAFFIC CHANNELS |
| ETS 300 960 : 20002 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM; FULL RATE SPEECH; PROCESSING FUNCTIONS |
| ETS 300 963 : 20001 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM; FULL RATE SPEECH; COMFORT NOISE ASPECT FOR FULL RATE SPEECH TRAFFIC CHANNELS |
| ETR 350 : 20001 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - ABBREVIATIONS AND ACRONYMS |
| ETS 300 964 : 20001 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM; FULL RATE SPEECH; DISCONTINUOUS TRANSMISSION (DTX) FOR FULL RATE SPEECH TRAFFIC CHANNELS |
| ETS 300 961 : 20003 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); FULL RATE SPEECH; TRANSCODING (GSM 06.10 VERSION 5.2.1) |
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