Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
   3.1 Definitions
   3.2 Symbols
   3.3 Abbreviations
4 General
5 Functional description
   5.1 Overview and principles of operation
   5.2 Algorithm description
6 Computational description overview
   6.1 VAD modules
   6.2 Pseudo-floating point arithmetic
Annex A (informative): Simplified block filtering
        operation
Annex B (informative): Pole frequency calculation
History

Abstract

Specifies the Voice Activity Detector (VAD) to be used in the Discontinuous Transmission (DTX) as described in GSM EFR 06.31. It also specifies the test methods to be used to verify that a VAD complies with this ETS. The requirements are mandatory on any VAD to be used either in GSM Mobile Stations (MS)s or Base Station Systems (BSS)s that utilise the enhanced full-rate speech traffic channel.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 2
Supersedes	PRETS 300 730 : NOV 96