Skip to content
Please enter a keyword to search

  • TR 126 975 : 13.0.0

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); LTE; PERFORMANCE CHARACTERIZATION OF THE ADAPTIVE MULTI-RATE (AMR) SPEECH CODEC (3GPP TR 26.975 VERSION 14.0.0 RELEASE 14)

    Available format(s):  Hardcopy, PDF

    Superseded date:  19-09-2020

    Language(s):  English

    Published date: 

    Publisher:  European Telecommunications Standards Institute

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    Intellectual Property Rights
    Foreword
    Modal verbs terminology
    Foreword
    1 Scope
    2 References
    3 Definitions and abbreviations
    4 General
    5 Quality in Clean Speech and Error Conditions
    6 Quality under background noise and Errors Conditions
    7 Performances in Tandeming and with variation of the
       input speech level
    8 Performances with the Codec Adaptation turned on
    9 VAD/DTX Performances
    10 Performances with DTMF tones
    11 Transparency to Signaling tones
    12 Performances with special input signals
    13 Language Dependency
    14 Transmission Delay
    15 Frequency Response
    16 Complexity
    Annex A - AMR GSM Characterization Phase Overview
    Annex B - AMR Verification Phase Overview
    Annex C - Additional Characterization Test Results
    Annex D - AMR Performances as a function of
              FER and RBER
    Annex E - AMR Characterization in 3G Channels
    Annex F - Change history
    History

    Abstract - (Show below) - (Hide below)

    Gives background information on the performances of the Adaptive Multi-Rate (AMR) speech codec.

    General Product Information - (Show below) - (Hide below)

    Committee 3GPP SA 4
    Document Type Standard
    Publisher European Telecommunications Standards Institute
    Status Superseded

    Standards Referencing This Book - (Show below) - (Hide below)

    ETSI GSM 01.04 : 050000 EUROPEAN DIGITAL CELLULAR TELECOMMUNICATION SYSTEM (PHASE 2); DEFINITIONS, ABBREVIATIONS AND ACRONYMS
    ETSI GSM 03.50 : 050000 DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - TRANSMISSION PLANNING ASPECTS OF THE SPEECH SERVICE IN THE GSM PUBLIC LAND MOBILE NETWORK (PLMN)
    ETSI GSM 08.60 : 4.0.1 INBAND CONTROL OF REMOTE TRANSCODERS AND RATE ADAPTORS
    ETSI GSM 08.61 : 4.0.1 DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); IN-BAND CONTROL OF REMOTE TRANSCODERS AND RATE ADAPTORS FOR HALF RATE TRAFFIC CHANNELS
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective