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
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
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