3GPP-TS-26.131-V13.0.0-(2015-09)仪器设备行业标准

3GPPTS26.131V13.0.0(2015-09)

TechnicalSpecification

3rdGenerationPartnershipProject;

TechnicalSpecificationGroupServicesandSystemAspects;

Terminalacousticcharacteristicsfortelephony;

Requirements

(Release13)

Thepresentdocumenthasbeendevelopedwithinthe3rdGenerationPartnershipProject(3GPPTM)andmaybefurtherelaboratedforthepurposesof3GPP.

Thepresentdocumenthasnotbeensubjecttoanyapprovalprocessbythe3GPPOrganizationalPartnersandshallnotbeimplemented.

ThisSpecificationisprovidedforfuturedevelopmentworkwithin3GPPonly.TheOrganizationalPartnersacceptnoliabilityforanyuseofthisSpecification.

Specificationsandreportsforimplementationofthe3GPPTMsystemshouldbeobtainedviathe3GPPOrganizationalPartners'PublicationsOffices.

STYLEREFZA

3GPPTS26.131V13.0.0(2015-09)

PAGE

69

STYLEREFZGSM

Release13

3GPP

Keywords

UMTS,terminal,telephony,acoustic,LTE

3GPP

Postaladdress

3GPPsupportofficeaddress

650RoutedesLucioles-SophiaAntipolis

Valbonne-FRANCE

Tel.:+33492944200Fax:+33493654716

Internet

CopyrightNotification

Nopartmaybereproducedexceptasauthorizedbywrittenpermission.

Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.

©2015,3GPPOrganizationalPartners(ARIB,ATIS,CCSA,ETSI,TSDSI,TTA,TTC).

Allrightsreserved.

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3GPP™isaTradeMarkofETSIregisteredforthebenefitofitsMembersandofthe3GPPOrganizationalPartners

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GSM®andtheGSMlogoareregisteredandownedbytheGSMAssociation

Contents

TOC\o"1-9"

Foreword

7

Introduction

7

1 Scope

8

2 References

8

3 Definitions,symbolsandabbreviations

9

3.1 Definitions

9

3.2 Abbreviations

9

4 Interfaces

10

5 Narrowbandtelephonytransmissionperformance

10

5.1 Applicability

10

5.2 Overallloss/loudnessratings

11

5.2.1 General

11

5.2.2 ConnectionswithhandsetUE

11

5.2.3 Connectionswithdesktopandvehicle-mountedhands-freeUE

11

5.2.4 Connectionswithhand-heldhands-freeUE

12

5.2.5 ConnectionswithheadsetUE

12

5.3 Idlechannelnoise(handsetandheadsetUE)

12

5.3.1 Sending

12

5.3.2 Receiving

12

5.4 Sensitivity/frequencycharacteristics

13

5.4.1 HandsetandheadsetUEsending

13

5.4.2 HandsetandheadsetUEreceiving

14

5.4.3 Desktopandvehicle-mountedhands-freeUEsending

15

5.4.4 Desktopandvehicle-mountedhands-freeUEreceiving

16

5.4.5 Hand-heldhands-freeUEsending

17

5.4.6 Hand-heldhands-freeUEreceiving

18

5.5 Sidetonecharacteristics(handsetandheadsetUE)

19

5.5.1 Sidetoneloss

19

5.5.2 Sidetonedelay

19

5.6 Stabilityloss

20

5.7 Acousticechocontrol

20

5.7.1 General

20

5.7.2 Acousticechocontrolindesktopandvehicle-mountedhands-freeUE

20

5.7.3 Acousticechocontrolinhand-heldhands-freeUE

21

5.7.4 AcousticechocontrolinahandsetUE

21

5.7.5 AcousticechocontrolinaheadsetUE

21

5.8 Distortion

21

5.8.1 Sendingdistortion

21

5.8.2 Receiving

22

5.9 Void

23

5.10 Informationonotherparameters(notnormative)

23

5.11 Sendingperformanceinthepresenceofambientnoise

23

5.11.1 General

23

5.11.2 ConnectionswithhandsetUE

23

5.12 Delay

23

5.12.0 UEdelaydefinition

23

5.12.1 HandsetUE

24

5.12.2 HeadsetUE

25

Wiredheadset

25

Wirelessheadset

26

5.13 Echocontrolcharacteristics

26

5.13.1 Handset

27

5.13.2 Headset

27

5.13.3 Handheldhands-free

27

5.13.4 Desktopandvehiclemountedhands-free

27

6 Widebandtelephonytransmissionperformance

28

6.1 Applicability

28

6.2 Overallloss/loudnessratings

28

6.2.1 General

28

6.2.2 ConnectionswithhandsetUE

28

6.2.3 Connectionswithdesktopandvehicle-mountedhands-freeUE

28

6.2.4 Connectionswithhand-heldhands-freeUE

29

6.2.5 ConnectionswithheadsetUE

29

6.3 Idlechannelnoise(handsetandheadsetUE)

30

6.3.1 Sending

30

6.3.2 Receiving

30

6.4 Sensitivity/frequencycharacteristics

30

6.4.1 HandsetandheadsetUEsending

30

6.4.2 HandsetandheadsetUEreceiving

31

6.4.3 Desktopandvehicle-mountedhands-freeUEsending

31

6.4.4 Desktopandvehicle-mountedhands-freeUEreceiving

32

6.4.5 Hand-heldhands-freeUEsending

34

6.4.6 Hand-heldhands-freeUEreceiving

34

6.5 Sidetonecharacteristics(handsetandheadsetUE)

36

6.5.1 Sidetoneloss

36

6.5.2 Sidetonedelay

36

6.6 Stabilityloss

37

6.7 Acousticechocontrol

37

6.7.1 General

37

6.7.2 Acousticechocontrolindesktopandvehicle-mountedhands-freeUE

37

6.7.3 Acousticechocontrolinhand-heldhands-freeUE

37

6.7.4 AcousticechocontrolinahandsetUE

38

6.7.5 AcousticechocontrolinaheadsetUE

38

6.8 Distortion

38

6.8.1 Sendingdistortion

38

6.8.2 Receiving

39

6.9 Void

40

6.10 Sendingperformanceinthepresenceofambientnoise

40

6.10.1 General

40

6.10.2 ConnectionswithhandsetUE

40

6.11 Delay

40

6.11.0 UEdelaydefinition

40

6.11.1 HandsetUE

41

6.11.2 HeadsetUE

42

Wiredheadset

42

Wirelessheadset

43

6.12 Echocontrolcharacteristics

43

6.12.1 Handset

44

6.12.2 Headset

44

6.12.3 Handheldhands-free

44

6.12.4 Desktopandvehiclemountedhands-free

44

7 Super-widebandtelephonytransmissionperformance

45

7.1 Applicability

45

7.2 Overallloss/loudnessratings

45

7.2.1 General

45

7.2.2 ConnectionswithhandsetUE

45

7.2.3 Connectionswithdesktopandvehicle-mountedhands-freeUE

45

7.2.4 Connectionswithhand-heldhands-freeUE

46

7.2.5 ConnectionswithheadsetUE

46

7.3 Idlechannelnoise(handsetandheadsetUE)

47

7.3.1 Sending

47

7.3.2 Receiving

47

7.4 Sensitivity/frequencycharacteristics

47

7.4.0 General

47

7.4.1 HandsetandheadsetUEsending

47

7.4.2 HandsetandheadsetUEreceiving

48

HandsetUEreceiving

48

HeadsetUEreceiving

49

7.4.3 Desktopandvehicle-mountedhands-freeUEsending

50

7.4.4 Desktopandvehicle-mountedhands-freeUEreceiving

50

7.4.5 Hand-heldhands-freeUEsending

51

7.4.6 Hand-heldhands-freeUEreceiving

52

7.5 Sidetonecharacteristics(handsetandheadsetUE)

53

7.5.1 Sidetoneloss

53

7.5.2 Sidetonedelay

53

7.6 Stabilityloss

53

7.7 Acousticechocontrol

54

7.7.1 General

54

7.7.2 Acousticechocontrolindesktopandvehicle-mountedhands-freeUE

54

7.7.3 Acousticechocontrolinhand-heldhands-freeUE

54

7.7.4 AcousticechocontrolinahandsetUE

54

7.7.5 AcousticechocontrolinaheadsetUE

55

7.8 Distortion

55

7.8.1 Sendingdistortion

55

7.8.2 Receiving

56

7.9 Void

56

7.10 Sendingperformanceinthepresenceofambientnoise

56

7.10.1 General

57

7.10.2 ConnectionswithhandsetUE

57

7.11 Delay

57

7.11.0 UEdelaydefinition

57

7.11.1 HandsetUE

57

7.11.2 HeadsetUE

58

Wiredheadset

58

Wirelessheadset

59

7.12 Echocontrolcharacteristics

59

7.12.1 Handset

60

7.12.2 Headset

60

7.12.3 Handheldhands-free

60

7.12.4 Desktopandvehiclemountedhands-free

60

8 Fullbandtelephonytransmissionperformance

61

8.1 Applicability

61

8.2 Overallloss/loudnessratings

61

8.2.1 General

61

8.2.2 ConnectionswithhandsetUE

61

8.2.3 Connectionswithdesktopandvehicle-mountedhands-freeUE

61

8.2.4 Connectionswithhand-heldhands-freeUE

61

8.2.5 ConnectionswithheadsetUE

61

8.3 Idlechannelnoise(handsetandheadsetUE)

61

8.3.1 Sending

61

8.3.2 Receiving

61

8.4 Sensitivity/frequencycharacteristics

62

7.4.0 General

62

8.4.1 HandsetandheadsetUEsending

62

8.4.2 HandsetandheadsetUEreceiving

62

HandsetUEreceiving

62

HeadsetUEreceiving

62

8.4.3 Desktopandvehicle-mountedhands-freeUEsending

62

8.4.4 Desktopandvehicle-mountedhands-freeUEreceiving

62

8.4.5 Hand-heldhands-freeUEsending

62

8.4.6 Hand-heldhands-freeUEreceiving

62

8.5 Sidetonecharacteristics(handsetandheadsetUE)

63

8.5.1 Sidetoneloss

63

8.5.2 Sidetonedelay

63

8.6 Stabilityloss

63

8.7 Acousticechocontrol

63

8.7.1 General

63

8.7.2 Acousticechocontrolindesktopandvehicle-mountedhands-freeUE

63

8.7.3 Acousticechocontrolinhand-heldhands-freeUE

63

8.7.4 AcousticechocontrolinahandsetUE

63

8.7.5 AcousticechocontrolinaheadsetUE

63

8.8 Distortion

63

8.8.1 Sendingdistortion

63

8.8.2 Receiving

64

8.9 Void

64

8.10 Sendingperformanceinthepresenceofambientnoise

64

8.10.1 General

64

8.10.2 ConnectionswithhandsetUE

64

8.11 Delay

64

8.11.0 UEdelaydefinition

64

8.11.1 HandsetUE

64

8.11.2 HeadsetUE

65

Wiredheadset

65

Wirelessheadset

66

8.12 Echocontrolcharacteristics

66

8.12.1 Handset

66

8.12.2 Headset

66

8.12.3 Handheldhands-free

66

8.12.4 Desktopandvehiclemountedhands-free

67

AnnexA(informative): Changehistory

68

Foreword

ThisTechnicalSpecificationhasbeenproducedbythe3rdGenerationPartnershipProject(3GPP).

ThecontentsofthepresentdocumentaresubjecttocontinuingworkwithintheTSGandmaychangefollowingformalTSGapproval.ShouldtheTSGmodifythecontentsofthepresentdocument,itwillbere-releasedbytheTSGwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:

Versionx.y.z

where:

x thefirstdigit:

1 presentedtoTSGforinformation;

2 presentedtoTSGforapproval;

3 orgreaterindicatesTSGapproveddocumentunderchangecontrol.

y theseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.

z thethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthedocument.

Introduction

Thepresentdocumentspecifiesminimumperformancerequirementsfortheacousticcharacteristicsof3GandLTEterminalswhenusedtoprovidenarrowband,wideband,super-widebandorfullbandtelephony.

TheobjectivefornarrowbandservicesistoreachaqualityascloseaspossibletoITU-TstandardsforPSTNcircuits.However,duetotechnicalandeconomicfactors,therecannotbefullcompliancewiththegeneralcharacteristicsofinternationaltelephoneconnectionsandcircuitsrecommendedbytheITU-T.

Theperformancerequirementsarespecifiedinthemainbodyofthetext;thetestmethodsandconsiderationsaredescribedinTS26.132.

1 Scope

Thepresentdocumentisapplicabletoanyterminalcapableofsupportingnarrowband,wideband,super-widebandorfullbandtelephony,eitherasastand-aloneserviceorasthetelephonycomponentofamultimediaservice.Thepresentdocumentspecifiesminimumperformancerequirementsfortheacousticcharacteristicsof3GandLTEterminalswhenusedtoprovidenarrowband,wideband,super-widebandorfullbandtelephony.

Thesetofminimumperformancerequirementsenablesaguaranteedlevelofspeechqualitywhiletakingpossiblephysicallimitsoftheterminaldesignintoaccount.Someperformanceobjectivesarealsodefined,ifsuchdesignlimitscanbeovercome.Caremustbetakeninapplyingperformanceobjectivesinisolation,nottodegradeoverallend-userspeechquality.

2 References

Thefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.

Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornonspecific.

Foraspecificreference,subsequentrevisionsdonotapply.

Foranon-specificreference,thelatestversionapplies.Inthecaseofareferencetoa3GPPdocument(includingaGSMdocument),anon-specificreferenceimplicitlyreferstothelatestversionofthatdocumentinthesameReleaseasthepresentdocument.

[1] 3GPPTS26.132:"Speechandvideotelephonyterminalacoustictestspecification".

[2] ITU-T

Recommendation

B.12

(1988):"Useofthedecibelandtheneperintelecommunications"

[3] ITU-T

Recommendation

G.103

(1998):"Hypotheticalreferenceconnections".

[4] ITU-T

Recommendation

G.111

(1993):"Loudnessratings(LRs)inaninternationalconnection".

[5] ITU-T

Recommendation

G.121

(1993):"Loudnessratings(LRs)ofnationalsystems".

[6] ITU-T

Recommendation

G.122

(1993):"Influenceofnationalsystemsonstabilityandtalkerechoininternationalconnections".

[7] Void

[8] ITU-T

Recommendation

P.11

(1993):"Effectoftransmissionimpairments".

[9] ITU-T

Recommendation

P.380

(2003):"Electro-acousticmeasurementsonheadsets".

[10] ITU-T

Recommendation

P.50

(1993):"Artificialvoices".

[11] ITU-T

Recommendation

P.79

(11/07)

with

Annex

G

(2001):"Calculationofloudnessratingsfortelephonesets".

[12] ITU-T

Recommendation

G.223(11/88):"Assumptionsforthecalculationofnoiseonhypotheticalreferencecircuitsfortelephony".

[13] ITU-T

Recommendation

P.340(05/00):"Transmissioncharacteristicsandspeechqualityparametersofhands-freeterminals".

[14] ITU-T

Recommendation

P.501(01/12):"Testsignalsforuseintelephonometry".

[15] ITU-T

Recommendation

P.502(05/00):"Objectivetestmethodsforspeechcommunicationsystemsusingcomplextestsignals".

[16] 3GPP

TS

06.77

(R99):"MinimumPerformanceRequirementsforNoiseSuppresserApplicationtotheAMRSpeechEncoder".

[17] 3GPP

TS

26.114:"IPMultimediaSubsystem(IMS);MultimediaTelephony;Mediahandlingandinteraction".

[18] 3GPP

TS

23.203:"Policyandchargingcontrolarchitecture".

3 Definitions,symbolsandabbreviations

3.1 Definitions

Forthepurposesofthepresentdocumentthetermsnarrowband,wideband,super-widebandandfullbandrefertosignalsassociatedwiththecorrespondingoperatingmodesofthespeechcodecsspecifiedinTS26.132.

Forthepurposesofthepresentdocument,thetermsdB,dBr,dBm0,dBm0panddBA,shallbeinterpretedasdefinedinITU-TRecommendationB.12[2];thetermdBPashallbeinterpretedasthesoundpressurelevelrelativeto1

pascalexpressedindB(0

dBPaisequivalentto94

dB

SPL).

Theoverloadpoint(maximumloadcapacity)isforthepurposesofthisdocumentdefinedastheRMSlevelofadigitalrepresentationofafull-scalepuretoneattheinputofthespeechencoder.Theoverloadpointisdefinedat3,14dBm0forAMR,AMR-WBandEVSspeechcodecs.

A3GPPsoftphoneisatelephonysystemrunningonageneralpurposecomputerorPDAcomplyingwiththe3GPPterminalacousticrequirements(TS26.131and26.132).

3.2 Abbreviations

Forthepurposesofthepresentdocument,thefollowingabbreviationsapply:

ADC AnaloguetoDigitalConverter

AMR AdaptiveMultiRate

DAC DigitaltoAnalogueConverter

DAI DigitalAudioInterface

DRP EardrumReferencePoint

DTX DiscontinuousTransmission

EEC ElectricalEchoControl

EL EchoLossERP EarReferencePoint

EVS EnhancedVoiceServicesHATS HeadandTorsoSimulator

IMS IPMultimediaSubsystem

LSTR ListenerSidetoneRating

LTE LongTermEvolution

MRP MouthReferencePoint

MTSI MultimediaTelephonyServiceforIMSOLR OverallLoudnessRating

PCM PulseCodeModulation

PDA PersonalDigitalAssistant

POI PointofInterconnection(withPSTN)

PSTN PublicSwitchedTelephoneNetwork

RLR ReceiveLoudnessRating

SLR SendLoudnessRating

STMR SidetoneMaskingRating

SS SystemSimulator

TX Transmission

UE UserEquipment

UMTS UniversalMobileTelecommunicationsSystem

UPCMI 13-bitUniformPCMInterface

4 Interfaces

TheinterfacesrequiredtodefineterminalacousticcharacteristicsareshowninTS26.132.Thesearetheairinterfaceandthepointofinterconnect(POI).Theinterfacesareshownforone-channel(mono)operation,interfacesfortwo-channel(stereo)operationisforfurtherstudy.

TheAirInterfacesforGSM,3GandLTEarespecifiedbyGSM05,3GPP45,3GPP25and3GPP36seriesspecifications.MTSIspeechaspectsarespecifiedbyTS26.114[17].

Measurementscanbemadeusingthesystemsimulator(SS)describedinTS26.132.

ThePOIwiththepublicswitchedtelephonenetwork(PSTN)isconsideredtohavearelativelevelof0

dBr.

Fiveclassesofacousticinterfaceareconsideredinthisspecification:

- HandsetUEincludingsoftphoneUEusedasahandset;

- HeadsetUEincludingsoftphoneUEusedwithheadset;

- Desktop-mountedhands-freeUEincludingsoftphoneUEwithexternalloudspeaker(s)usedinhands-freemode;

- Vehicle-mountedhands-freeUEincludingsoftphoneUEmountedinavehicle;

- Hand-heldhands-freeUEincludingsoftphoneUEwithinternalloudspeaker(s)usedinhands-freemode.

(SeedefinitionofsoftphoneinClause3.1)

NOTE: TherequirementsandperformanceobjectivesforasoftphoneUEshallbederivedaccordingtothefollowingrules:

- WhenusingasoftphoneUEasahandset:requirementsandperformanceobjectivesshallcorrespondtohandsetmode.

- WhenusingasoftphoneUEwithheadset:requirementsandperformanceobjectivesshallcorrespondtoheadsetmode.

- WhenasoftphoneUEismountedinavehicle:requirementsandperformanceobjectivesshallcorrespondtovehicle-mountedhandsfreemode.

- WhenusingasoftphoneUEinhands-freemode:

- Whenusinginternalloudspeaker(s),requirementsandperformanceobjectivesshallcorrespondtohand-heldhands-free.

- Whenusingexternalloudspeaker(s),requirementsandperformanceobjectivesshallcorrespondtodesktop-mountedhands-free.

5 Narrowbandtelephonytransmissionperformance

5.1 Applicability

Theperformancerequirementsinthissub-clauseshallapplywhenUEisusedtoprovidenarrowbandtelephony,eitherasastand-aloneservice,oraspartofamultimediaservice.

5.2 Overallloss/loudnessratings

5.2.1 General

Aninternationalconnectioninvolvinga3GorLTEnetworkandthePSTNshouldmeettheoverallloudnessrating(OLR)limitsinITU-TRecommendationG.111[4].Thenationalpartsoftheconnectionshouldthereforemeetthesendandreceiveloudnessrating(SLR,RLR)limitsinITU-TRecommendationG.121[5].

Forthecasewheredigitalroutingsareusedtoconnectthe3GorLTEnetworktotheinternationalchainofcircuits,theSLRandRLRofthenationalextensionwillbelargelydeterminedbytheSLRandRLRofthe3GorLTEnetwork.ThelimitsgivenbelowareconsistentwiththenationalextensionlimitsandlongtermobjectivesinITU-TRecommendationG.121[5].

TheSLRandRLRvaluesforthe3GorLTEnetworkapplyuptothePOI.However,themaindeterminingfactorsarethecharacteristicsoftheUE,includingtheanaloguetodigitalconversion(ADC)anddigitaltoanalogueconversion(DAC).Inpractice,itisconvenienttospecifyloudnessratingstotheAirInterface.Forthenormalcase,wherethe3GorLTEnetworkintroducesnoadditionallossbetweentheAirInterfaceandthePOI,theloudnessratingstothePSTNboundary(POI)willbethesameastheloudnessratingsmeasuredattheAirInterface.However,insomecaseslossadjustmentmaybeneededforinterworkingsituationsinindividualcountries.

5.2.2 ConnectionswithhandsetUE

ThenominalvaluesofSLR/RLRtothePOIshallbe:

SLR=8±3

dB;

RLR=2±3

dB.

Whereauser-controlledreceivingvolumecontrolisprovided,theRLRshallmeetthenominalvalueforatleastonesettingofthecontrol.Whenthecontrolissettomaximum,theRLRshallnotbe≤(equalorlouderthan)13

dB.

WiththevolumecontrolsettotheminimumpositiontheRLRshallnotbe≥(equalorquieterthan)18dB.

ComplianceshallbecheckedbytherelevanttestsdescribedinTS26.132.

5.2.3 Connectionswithdesktopandvehicle-mountedhands-freeUE

ThenominalvaluesofSLR/RLRto/fromthePOIshallbe:

SLR=13±4

dB;

RLR=2±4

dB(forvehicle-mountedhands-freeUE);

RLR=5±4

dB(fordesktophands-freeUE).

1. Foravehicle-mountedhands-freeUE:

Whereauser-controlledvolumecontrolisprovided,theRLRshallmeetthenominalvalueforatleastonesettingofthecontrol.Itisrecommendedthatavolumecontrolgivingatleast15

dBincreasefromthenominalRLR(louder)isprovidedforhands-freeunitsintendedtoworkinthevehicleenvironment.Thisistoallowfortheincreasedacousticnoiselevelinamovingvehicle.

RLRatthemaximumvolumecontrolsettingshouldbe≤(equalorlouderthan)-2

dB.

2. Foradesktophands-freeUE:

Whereauser-controlledvolumecontrolisprovided,theRLRshallmeetthenominalvalueforatleastonesettingofthecontrol.Itisrecommendedthatavolumecontrolgivingatleast15

dBincreasefromthenominalRLR(louder)isprovidedforhands-freeunits.Thisistoallowfortheincreasedacousticnoiselevelintheusageenvironment.

RLRatthemaximumvolumecontrolsettingshouldbe≤(equalorlouderthan)1

dB.

ComplianceshallbecheckedbytherelevanttestsdescribedinTS26.132.

NOTE: ThetargetvaluefornominalRLR,asrecommendedinITU-TG.111AnnexB–TableB.1[4],liesbetween1and3

dB.ThehigherRLRrequirementof5

dBfordesktophands-freeisappreciativeofthelimitationsintransduceroutputwithcurrenttypicalformfactors.

5.2.4 Connectionswithhand-heldhands-freeUE

ThenominalvaluesofSLR/RLRto/fromthePOIshallbe:

SLR=13±4

dB;

RLR=9+9/-7

dB.

AsaperformanceobjectiveitisrecommendedthattheRLRatthemaximumvolumecontrolsettingis≤(equalorlouderthan)2

dB.

Whereauser-controlledvolumecontrolisprovided,theRLRshallmeetthenominalvalueforatleastonesettingofthecontrol.Itisrecommendedthatavolumecontrolrange≥15

dBbeprovided.ComplianceshallbecheckedbytherelevanttestsdescribedinTS26.132.

NOTE: ThetargetvaluefornominalRLR,asrecommendedinITU-TG.111AnnexB–TableB.1[4],liesbetween1and3

dB.ThehigherRLRrequirementof9

dBforhand-heldhands-freeisappreciativeofthelimitationsintransduceroutputwithtypicalformfactors.

5.2.5 ConnectionswithheadsetUE

ThenominalvaluesofSLR/RLRto/fromthePOIshallbe:

SLR=8±3

dB;

RLR=2±3

dB;

RLR(binauralheadset)=8±3

dBforeachearphone.

Whereauser-controlledreceivingvolumecontrolisprovided,theRLRshallmeetthenominalvalueforatleastonesettingofthecontrol.Whenthecontrolissettomaximum,theRLRshallnotbe≤(equalorlouderthan)-13

dB.

WiththevolumecontrolsettotheminimumpositiontheRLRshallnotbe≥(equalorquieterthan)18

dBandshallnotbe≥(equalorquieterthan)24

dBforabinauralheadset.

Complianceshallbecheckedbytherelevanttestsdescribedin3GPPTS26.132.

5.3 Idlechannelnoise(handsetandheadsetUE)

5.3.1 Sending

ThemaximumnoiselevelproducedbytheapparatusattheoutputoftheSSundersilentconditionsinthesendingdirectionshallbe≤-64

dBm0p.

NOTE1: Thislevelincludestheeventualnoisecontributionofanacousticechocancellerundertheconditionthatnosignalisreceived.

NOTE2: Thisfigureappliestothetotalnoiselevelwithpsophometricweighting.Itisrecommendedthatthelevelofsinglefrequencydisturbancesshouldbe≤-74

dBm0pinthefrequencyrangefrom300

Hzto3.4

kHz.

ComplianceshallbecheckedbytherelevanttestdescribedinTS26.132.

5.3.2 Receiving

Themaximum(acoustic)A-weightednoiselevelatthehandsetandheadsetUEwhennosignalisappliedtotheinputoftheSSshallbeasfollows:

Ifnouser-controlledreceivingvolumecontrolisprovided,or,ifitisprovided,atthesettingoftheuser-controlledreceivingvolumecontrolatwhichtheRLRisequaltothenominalvalue,thenoisemeasuredattheDRPwithdiffuse-fieldcorrectioncontributedbythereceivingequipmentaloneshallbe≤-57

dBPa(A).

Whereavolumecontrolisprovided,themeasurednoiseshallbe≤-54

dBPa(A)atthemaximumsettingofthevolumecontrol.

Forthenominalvolumecontrolsetting,thelevelofsinglefrequencydisturbancesshouldbe≤60

dBPa(A)inthefrequencyrangefrom100

Hzto10

kHz.Asaperformanceobjectiveitisrecommendedthatthelevelshouldbe≤64

dBPa(A).

NOTE: InaconnectionwiththePSTN,noiseconditionsasdescribedinITU-TRecommendationG.103[3]canbeexpectedattheinput(POI)ofthe3GorLTEnetwork.Thecharacteristicsofthisnoisemaybeinfluencedbythespeechtranscodingprocess(forfurtherstudy).

Complianceshallbecheckedbytherelevanttestdescribedin3GPPTS26.132.

5.4 Sensitivity/frequencycharacteristics

5.4.1 HandsetandheadsetUEsending

Thesensitivity/frequencycharacteristicsshallbeasfollows:

Thesendingsensitivityfrequencyresponse,measuredeitherfromthemouthreferencepoint(MRP)tothedigitalinterfaceorfromtheMRPtotheSSaudiooutput(digitaloutputofthereferencespeechdecoderoftheSS),shallbewithinamask,whichcanbedrawnbetweenthepointsgivenintable

1.Themaskisdrawnwithstraightlinesbetweenthebreakingpointsintable

1onalogarithmic(frequency)-linear(dBsensitivity)scale.

Table1:Handsetandheadsetsendingsensitivity/frequencymask

Frequency(Hz)

Upperlimit

Lowerlimit

100

12

200

0

300

0

12

1

000

0

6

2

000

4

6

3

000

4

6

3

400

4

9

4

000

0

NOTE: AllsensitivityvaluesareexpressedindBonanarbitraryscale.

Figure1:Handsetandheadsetsendingsensitivity/frequencymask

ComplianceshallbecheckedbytherelevanttestdescribedinTS26.132.

5.4.2 HandsetandheadsetUEreceiving

Thesensitivity/frequencycharacteristicsshallbeasfollows:

Thereceivingsensitivityfrequencyresponse,measuredeitherfromthedigitalinterfacetotheDRPwithdiffuse-fieldcorrectionorfromtheSSaudioinput(analogueordigitalinputofthereferencespeechencoderoftheSS)totheDRPwithdiffuse-fieldcorrectionshallbewithinamask,whichcanbedrawnwithstraightlinesbetweenthebreakingpointsintable2onalogarithmic(frequency)-linear(dBsensitivity)scale.

Table2:Handsetandheadsetreceivingsensitivity/frequencymaskfor8Napplicationforce

Frequency(Hz)

Upperlimit

8±2

N

Lowerlimit

8±2

N

100

6

300

6

-6

3

400

6

-6

4

000

6

NOTE1: AllsensitivityvaluesareexpressedindBonanarbitraryscale

NOTE2: Thebasisforthetargetfrequencyresponsesinsendandreceiveistheorthotelephonicreferenceresponsemeasuredbetween2subjects1

mapartunderfree-fieldconditionsandassumesanidealreceivecharacteristic.Undertheseconditionstheoverallfrequencyresponseshowsarisingslope.ThepresentdocumentnolongerusestheERPasthereferencepointforreceivebutth