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ETSI TR 146 076
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ETSI TR 146 076 Digital cellular telecommunications system (Phase 2+); Adaptive Multi-Rate (AMR) speech codec; Study phase report (3GPP TR 46.076 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 04/01/2017
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Full Description
ETSI TR 146 076 presents the outcome of the Study Phase initiated at SMG#20 on the concept of the AdaptiveMulti-Rate (AMR) codec. The AMR concept represents a new approach to achieving consistent high quality speechcombined with efficient spectrum usage. It was recognized at SMG#20 that this would require novel techniques whosefeasibility should first be assessed before proceeding with a full development of the AMR system and its control.Clauses 1 to 4 provide an overview and background to the AMR concept. Clause 5 provides a basic description of theAMR system functionality including working assumptions that have been agreed during the Study Phase. Feasibilityaspects are considered in clause 6. The requirement specification, which will form the basis for the development phase,is contained in clause 7. Clause 8 gives an indication of the MS and network upgrades needed to support AMR.Clause 9 outlines how the AMR codec will be developed, tested and selected including the proposed time-plan.Clauses 10 and 11 conclude with a summary of the risks and recommendations.