ETSI EN 300 724 V8.0.1 (2000-11)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 version 8.0.1 Release 1999)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 724 Version 8.0.1SIST EN 300 724 V8.0.1:2003en01-december-2003SIST EN 300 724 V8.0.1:2003SLOVENSKI
STANDARD



SIST EN 300 724 V8.0.1:2003



ETSIEN300724V8.0.1(2000-11)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);ANSI-CcodefortheGSMEnhancedFullRate(EFR)speechcodec(GSM06.53version8.0.1Release1999)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 724 V8.0.1:2003



ETSIETSIEN300724V8.0.1(2000-11)2(GSM06.53version8.0.1Release1999)ReferenceREN/SMG-110653Q8KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 724 V8.0.1:2003



ETSIETSIEN300724V8.0.1(2000-11)3(GSM06.53version8.0.1Release1999)ContentsIntellectualPropertyRights.4Foreword.41Scope.52References.53Definitionsandabbreviations.53.1Definitions.53.2Abbreviations.64Ccodestructure.64.1ContentsoftheCsourcecodedisk.64.2Programexecution.74.3Codehierarchy.7AnnexA(informative):ChangeRequestHistory.13History.14SIST EN 300 724 V8.0.1:2003



ETSIETSIEN300724V8.0.1(2000-11)4(GSM06.53version8.0.1Release1999)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeSpecialMobileGroup(SMG).ThepresentdocumentprovidesthebitexactdefinitionoftheEnhancedFullRate(EFR)speechtrafficcodecforthedigitalcellulartelecommunicationssystem.Anelectronicattachmentaccompaniesthepresentdocument,containingclause5,thebit-exactANSI-CcodefortheEnhancedFullRatespeechtranscoder.ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillbere-releasedwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version8.x.ywhere:8indicatesRelease1999ofGSMPhase2+.xtheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:3November2000DateoflatestannouncementofthisEN(doa):28February2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31August2001DateofwithdrawalofanyconflictingNationalStandard(dow):31August2001SIST EN 300 724 V8.0.1:2003



ETSIETSIEN300724V8.0.1(2000-11)5(GSM06.53version8.0.1Release1999)1ScopeThepresentdocumentcontainsanelectroniccopyoftheANSI-CcodefortheGSMEnhancedFullRatecodec.TheANSI-CcodeisnecessaryforabitexactimplementationoftheEnhancedFullRatespeechtranscoder(GSM06.60[3]),VoiceActivityDetection(GSM06.82[7]),comfortnoise(GSM06.62[5]),DiscontinuousTransmission(GSM06.81[6])andexamplesolutionsforsubstitutingandmutingoflostframes(GSM06.61[4]).2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.• ForthisRelease1999document,referencestoGSMdocumentsareforRelease1999versions(version8.x.y).[1]GSM01.04:"Digitalcellulartelecommunicationssystem(Phase2+);Abbreviationsandacronyms".[2]GSM06.54:"Digitalcellulartelecommunicationssystem(Phase2+);TestsequencesfortheGSMEnhancedFullRate(EFR)speechcodec".[3]GSM06.60:"Digitalcellulartelecommunicationssystem(Phase2+);EnhancedFullRate(EFR)speechtranscoding".[4]GSM06.61:"Digitalcellulartelecommunicationssystem(Phase2+);SubstitutionandmutingoflostframeforEnhancedFullRate(EFR)speechtrafficchannels".[5]GSM06.62:"Digitalcellulartelecommunicationssystem(Phase2+);Comfortnoise
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