ETS 300 580-6 : 20004
Current
The latest, up-to-date edition.
DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2) - FULL RATE SPEECH; PART 6: VOICE ACTIVITY DETECTION (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
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 1 (informative): Simplified block filtering
operation
Annex 2 (informative): Description of digital test
sequences
Annex 3 (informative): VAD performance
Annex 4 (informative): Pole frequency calculation
Annex B (normative): Test sequences diskette
History
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