Table of Contents

Intellectual Property Rights
Foreword
Foreword
1 Scope
2 References
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 General
   4.1 Project History
   4.2 Overview of the AMR-NS Work Item
   4.3 Presentation of the following sections
5 Minimum Performance Requirements
6 Comparison of Candidates by Subjective Means
7 Selection Phase Listening Tests and Results
   7.1 Summary of Selection Tests undertaken
   7.2 Summary of Listening Test Results Covering Minimum
       Performance Requirements
   7.3 Summary of Listening Test Results Covering Comparison
       of Candidates
   7.4 Graphical Representation of Results from all Formal
       Listening Tests
8 Design Constraints
9 Impact on Voice Activity Factor VAF (with VAD/DTX active)
10 Objective Performance Measurements
11 Feasibility Study: Downlink Noise Suppression for AMR
Annex A: Key Selection Phase Documents
Annex B: Selection Phase Test Plan
Annex C: Global Analysis Spreadsheet
Annex D: Methodologies for Measuring Subjective SNR Improvement
      D1: CCR Experiments
      D2: ACR Experiments
Annex E: Methodology for NS performance evaluation by Objective
         Means
Annex F: Methodology for Measuring Impact on Voice Activity
         Factor (VAF)
Annex G (informative): Change history
History

Abstract

Contains background information on the performance of the six candidates which were proposed as solutions for publication of an example noise suppression solution for application to the GSM Adaptive Multi-Rate (AMR) speech codec.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 11