ETSI EG 202 765-2 V1.1.1 (2009-02) Speech Processi

ETSIEG202765-2V1.1.1(2009-02)ETSIGuideSpeechProcessing,TransmissionandQualityAspects(STQ);QoSandnetworkperformancemetricsandmeasurementmethodsPart2:TransmissionQualityIndicatorcombiningVoiceQualityMetricsETSIETSIEG202765-2V1.1.1(2009-02)2ReferenceDEG/STQ-00104-2Keywordsperformance,QoS,voiceETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableat:©EuropeanTelecommunicationsStandardsInstitute2009.Allrightsreserved.DECTTM,PLUGTESTSTM,UMTSTM,TIPHONTM,theTIPHONlogoandtheETSIlogoareTradeMarksofETSIregisteredforthebenefitofitsMembers.3GPPTMisaTradeMarkofETSIregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartners.LTE™isaTradeMarkofETSIcurrentlybeingregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartners.GSM®andtheGSMlogoareTradeMarksregisteredandownedbytheGSMAssociation.ETSIETSIEG202765-2V1.1.1(2009-02)3ContentsIntellectualPropertyRights................................................................................................................................5Foreword.............................................................................................................................................................51Scope........................................................................................................................................................62References................................................................................................................................................62.1Normativereferences.........................................................................................................................................62.2Informativereferences........................................................................................................................................63Abbreviations...........................................................................................................................................74Introduction..............................................................................................................................................85Measurementtype....................................................................................................................................96Voicequalityscale.................................................................................................................................107Listofindicators.....................................................................................................................................107.1PostDiallingDelay..........................................................................................................................................107.2Mediaestablishmentdelay...............................................................................................................................107.3Unsuccessfulcallratio......................................................................................................................................117.4Prematurereleaseprobability...........................................................................................................................117.5Levelofactivespeechsignalatreception........................................................................................................117.6Noiselevelatreception....................................................................................................................................127.7Noisetosignalratioatreception......................................................................................................................127.8Speechsignalattenuation(orgain)aftertransmission.....................................................................................137.9Talkerechodelay.............................................................................................................................................147.10Talkerechoattenu