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INFORMATIONTECHNOLOGYUSERINTERFACESVOICECOMMANDSPART2CONSTRUCTINGANDTESTINGTECHNOLOGIESDELINFORMATIONINTERFACESUTILISATEURSCOMMANDESVOCALESPARTIE2CONSTRUIREETTESTERINTERNATIONALSTANDARDISO/IEC301222REFERENCENUMBERISO/IEC3012222017EFIRSTEDITION201702ISO/IEC2017IIISO/IEC2017ALLRIGHTSRESERVEDCOPYRIGHTPROTECTEDDOCUMENTISO/IEC2017,PUBLISHEDINSWITZERLANDALLRIGHTSRESERVEDUNLESSOTHERWISESPECIFIED,NOPARTOFTHISPUBLICATIONMAYBEREPRODUCEDORUTILIZEDOTHERWISEINANYFORMORBYANYMEANS,ELECTRONICORMECHANICAL,INCLUDINGPHOTOCOPYING,ORPOSTINGONTHEINTERNETORANINTRANET,WITHOUTPRIORWRITTENPERMISSIONPERMISSIONCANBEREQUESTEDFROMEITHERISOATTHEADDRESSBELOWORISOSMEMBERBODYINTHECOUNTRYOFTHEREQUESTERISOCOPYRIGHTOFFICECHDEBLANDONNET8CP401CH1214VERNIER,GENEVA,SWITZERLANDTEL41227490111FAX41227490947COPYRIGHTISOORGWWWISOORGISO/IEC3012222017EISO/IEC3012222017EFOREWORDIVINTRODUCTIONV1SCOPE12NORMATIVEREFERENCES13TERMSANDDEFINITIONS14CONFORMITY25REQUIREMENTSANDRECOMMENDATIONS251GENERAL252PHONETICSOFPHRASEFORAVOICECOMMAND253DESIGNPRINCIPLEFORAVOICECOMMAND2531PHONETICDESCRIPTIONOFWORDS2532EASEOFPRONUNCIATION2533VARIATIONOFPRONUNCIATION254TESTOFSPEECHRECOGNITIONENGINE3541GENERAL3542SUBJECT3543SAMPLESOFAVOICECOMMAND3544CONDITIONSOFTEST3545PROCEDUREOFTEST3546RESULTS4BIBLIOGRAPHY5ISO/IEC2017ALLRIGHTSRESERVEDIIICONTENTSPAGEISO/IEC3012222017EFOREWORDISOTHEINTERNATIONALORGANIZATIONFORSTANDARDIZATIONANDIECTHEINTERNATIONALELECTROTECHNICALCOMMISSIONFORMTHESPECIALIZEDSYSTEMFORWORLDWIDESTANDARDIZATIONNATIONALBODIESTHATAREMEMBERSOFISOORIECPARTICIPATEINTHEDEVELOPMENTOFINTERNATIONALSTANDARDSTHROUGHTECHNICALCOMMITTEESESTABLISHEDBYTHERESPECTIVEORGANIZATIONTODEALWITHPARTICULARFIELDSOFTECHNICALACTIVITYISOANDIECTECHNICALCOMMITTEESCOLLABORATEINFIELDSOFMUTUALINTERESTOTHERINTERNATIONALORGANIZATIONS,GOVERNMENTALANDNONGOVERNMENTAL,INLIAISONWITHISOANDIEC,ALSOTAKEPARTINTHEWORKINTHEFIELDOFINFORMATIONTECHNOLOGY,ISOANDIECHAVEESTABLISHEDAJOINTTECHNICALCOMMITTEE,ISO/IECJTC1THEPROCEDURESUSEDTODEVELOPTHISDOCUMENTANDTHOSEINTENDEDFORITSFURTHERMAINTENANCEAREDESCRIBEDINTHEISO/IECDIRECTIVES,PART1INPARTICULARTHEDIFFERENTAPPROVALCRITERIANEEDEDFORTHEDIFFERENTTYPESOFISODOCUMENTSSHOULDBENOTEDTHISDOCUMENTWASDRAFTEDINACCORDANCEWITHTHEEDITORIALRULESOFTHEISO/IECDIRECTIVES,PART2SEEWWWISOORG/DIRECTIVESATTENTIONISDRAWNTOTHEPOSSIBILITYTHATSOMEOFTHEELEMENTSOFTHISDOCUMENTMAYBETHESUBJECTOFPATENTRIGHTSISOSHALLNOTBEHELDRESPONSIBLEFORIDENTIFYINGANYORALLSUCHPATENTRIGHTSDETAILSOFANYPATENTRIGHTSIDENTIFIEDDURINGTHEDEVELOPMENTOFTHEDOCUMENTWILLBEINTHEINTRODUCTIONAND/ORONTHEISOLISTOFPATENTDECLARATIONSRECEIVEDSEEWWWISOORG/PATENTSANYTRADENAMEUSEDINTHISDOCUMENTISINFORMATIONGIVENFORTHECONVENIENCEOFUSERSANDDOESNOTCONSTITUTEANENDORSEMENTFORANEXPLANATIONONTHEMEANINGOFISOSPECIFICTERMSANDEXPRESSIONSRELATEDTOCONFORMITYASSESSMENT,ASWELLASINFORMATIONABOUTISOSADHERENCETOTHEWORLDTRADEORGANIZATIONWTOPRINCIPLESINTHETECHNICALBARRIERSTOTRADETBTSEETHEFOLLOWINGURLWWWISOORG/ISO/FOREWORDHTMLTHECOMMITTEERESPONSIBLEFORTHISDOCUMENTISISO/IECJTC1,INFORMATIONTECHNOLOGY,SUBCOMMITTEESC35,USERINTERFACESALISTOFALLPARTSINTHEISO/IEC30122SERIESCANBEFOUNDONTHEISOWEBSITEIVISO/IEC2017ALLRIGHTSRESERVEDISO/IEC3012222017EINTRODUCTIONVOICECOMMANDISUSEDFORCONTROLLINGICTDEVICESWITHTHEVOICEANDINTHELANGUAGEOFTHEUSERTHISTECHNOLOGYISBASEDONSPEECHRECOGNITION,WITHSOMECONSIDERATIONFORLANGUAGETOLERANCEDIFFERENTACCENTSORSPEECHIMPAIRMENTWHILEUSINGAGIVENLANGUAGEITISALSOBENEFICIALTOTHEPEOPLEWHOAREOPERATINGTHEICTDEVICEWHEN/WHERETHEYCANNOTUSEHANDSORFINGERSTOOPERATEITTHISDOCUMENTDEFINESTHEPRINCIPALSTANDARDIZEDVOICECOMMANDSTHATWILLBECOMMONLYUSEDINVARIOUSICTDEVICESISO/IEC2017ALLRIGHTSRESERVEDVINFORMATIONTECHNOLOGYUSERINTERFACESVOICECOMMANDSPART2CONSTRUCTINGANDTESTING1SCOPETHISDOCUMENTPROVIDESTHETECHNICALCRITERIONSANDTESTMETHODSOFVOICECOMMANDSANDITSSPEECHRECOGNITIONENGINETHETECHNICALCRITERIONSINCLUDETHEPHONETICREQUIREMENTSFORSPOKENWORDSORPHRASESTHATCOMPOSETHEVOICECOMMANDTHETESTMETHODSVERIFYWHETHERTHEVOICECOMMANDORSPEECHRECOGNITIONENGINESATISFIESTHEREQUIREDSPECIFICATIONS2NORMATIVEREFERENCESTHEREARENONORMATIVEREFERENCESINTHISDOCUMENT3TERMSANDDEFINITIONSFORTHEPURPOSESOFTHISDOCUMENT,THEFOLLOWINGTERMSANDDEFINITIONSAPPLYISOANDIECMAINTAINTERMINOLOGICALDATABASESFORUSEINSTANDARDIZATIONATTHEFOLLOWINGADDRESSESIECELECTROPEDIAAVAILABLEATHTTP/WWWELECTROPEDIAORG/ISOONLINEBROWSINGPLATFORMAVAILABLEATHTTP/WWWISOORG/OBP31WORDSMALLESTLINGUISTICUNITCONVEYINGASPECIFICMEANINGSOURCEISO51272001,11207,MODIFIED32SYLLABLESEGMENTOFSPEECHWHICHCONSISTSOFAVOWELWITHORWITHOUTONEORMOREACCOMPANYINGCONSONANTSIMMEDIATELYPRECEDINGORFOLLOWINGSOURCEISO825332012,3833SENTENCERELATEDGROUPOFWORDFORMSCONTAININGAPREDICATION,USUALLYEXPRESSINGACOMPLETETHOUGHTANDFORMINGTHEBASICUNITOFDISCOURSESTRUCTURESOURCEISO2461512014,315INTERNATIONALSTANDARDISO/IEC3012222017EISO/IEC2017ALLRIGHTSRESERVED1ISO/IEC3012222017E34SPEECHRECOGNITIONCONVERSION,BYAFUNCTIONALUNIT,OFASPEECHSIGNALTOAREPRESENTATIONOFTHECONTENTOFTHESPEECHSOURCEISO/IEC23822015,2120735,MODIFIED4CONFORMITYTHEVOICECOMMANDISCONFORMANTTOTHISDOCUMENTIFITMEETSALLOFTHEREQUIREMENTSOFCLAUSE55REQUIREMENTSANDRECOMMENDATIONS51GENERALWORDSORPHRASESFORVOICECOMMANDSSHALLBERECOGNIZEDCORRECTLYTHEREFORE,THEFOLLOWINGCONDITIONSARECONSIDEREDWORDSORPHRASESFORVOICECOMMANDSARERECOGNIZEDEASILYACOUSTICALLYSIMILARWORDSORPHRASESARENOTREGISTEREDWORDSORPHRASESTHATWAVERDEPENDINGONTHEINDIVIDUALARENOTUSED52PHONETICSOFPHRASEFORAVOICECOMMANDTHEVOICECOMMANDPHRASESHOULDINCLUDEPLURALWORDSTHEWORDSTHATAREUSEDINTHEPHRASEFORAVOICECOMMANDSHOULDCONSISTOFPLURALSYLLABLES53DESIGNPRINCIPLEFORAVOICECOMMAND531PHONETICDESCRIPTIONOFWORDSPRONUNCIATIONSOFWORDSUSEDINAVOICECOMMANDSHOULDBEDESCRIBEDINANAPPROPRIATEMARKUPWAYEXAMPLEINTERNATIONALPHONETICALPHABETIPA,SPEECHASSESSMENTMETHODSPHONETICALPHABETSAMPA,ETCNOTEASPEECHRECOGNITIONENGINEDOESNOTALWAYSDISTINGUISHTHEDIFFERENCEBETWEENINTONATIONSORACCENTS532EASEOFPRONUNCIATIONWORDSUSEDINAVOICECOMMANDSHOULDBEABLETOBEPRONOUNCEDEASILYBYANATIVEPERSON,ANDIDEALLYALSOBYAPERSONWITHLANGUAGEDIFFICULTIESSUCHASDYSLALIA,DYSPHEMIA,ETCTHELENGTHOFPHRASEFORAVOICECOMMANDSHOULDBEABLETOBESPOKENINONEBREATHNOTECOMBINATIONOFWORDS,SUCHASATONGUETWISTER,AREDIFFICULTTOPRONOUNCE533VARIATIONOFPRONUNCIATIONIFAWORDTHATHASMORETHANTWOPRONUNCIATIONSISUSED,ALLVARIATIONSOFPRONUNCIATIONSSHALLBEREGISTEREDTOTHEVOICECOMMANDATTRIBUTESEEISO/IEC3012212ISO/IEC2017ALLRIGHTSRESERVEDISO/IEC3012222017E54TESTOFSPEECHRECOGNITIONENGINE541GENERALTHISSUBCLAUSEPROVIDESHOWTOTESTTHESPEECHRECOGNITIONENGINETOBEUSEDTORECOGNIZEVOICECOMMANDSTHISSUBCLAUSEPROVIDESONLYTESTANDEVALUATIONMETHODSANDDOESNOTPROVIDEQUANTITATIVECRITERIONSOFSPECIFICATION542SUBJECTATLEAST10SUBJECTSSHALLPARTICIPATEINTHETESTIDEALLY,NOTLESSTHAN100SUBJECTSSHOULDPARTICIPATESUBJECTSSHOULDBESELECTEDFROMDIVERSEDEMOGRAPHICGROUPSSUCHASTHEFOLLOWINGAAGEBGENDERCNATIVELANGUAGEDCULTUREEPHYSICALCONDITIONPERSONWITHORWITHOUTDISABILITYFGEOGRAPHICLOCATIONSUBJECTSCANBECLASSIFIEDINTOTHEFOLLOWINGFOURGROUPSSUBJECTSFROMALLFOURGROUPSSHOULDBEINCLUDEDASPARTICIPANTSFORTHETESTASUBJECTSWHOAREUSINGVOICECOMMANDSFREQUENTLYBSUBJECTSWHOHAVEEXPERIENCEUSINGVOICECOMMANDSCSUBJECTSWHOHAVENOEXPERIENCEUSINGVOICECOMMANDSDBLINDANDVISUALLYIMPAIREDPEOPLECOULDBEASSOCIATEDFORADIFFERENTTESTFOREVALUATION543SAMPLESOFAVOICECOMMANDSAMPLESOFAVOICECOMMANDTOBEUSEDFORTHETESTSHOULDBESELECTEDFROMTHEFOLLOWINGGROUPSAVOICECOMMANDSTHATAREFREQUENTLYUSEDBVOICECOMMANDSTHATAREIMPORTANTFORSYSTEMSPECIFICATIONCVOICECOMMANDSTHATAREESTIMATEDTOBEDIFFICULTFORASPEECHRECOGNITIONENGINETORECOGNIZEDVOICECOMMANDSTHATARECHOSENRANDOMLYTHENUMBEROFSAMPLESOFAVOICECOMMANDSHALLBEATLEAST10ITSHOULDBEASMANYASPOSSIBLE544CONDITIONSOFTESTTHESPEECHRECOGNITIONENGINESHOULDBETESTEDINREALISTICCONDITIONSOFUSEEXAMPLEACARNAVIGATIONTESTISCONDUCTEDINTHESAMESIGNALTONOISERATIOCONDITIONOFDRIVING545PROCEDUREOFTESTTHESUBJECTSPEAKSTHESAMPLEOFAVOICECOMMAND,ANDTHESPOKENSAMPLEISDIRECTLYPROVIDEDORISRECORDEDATONCEANDWILLBELATERPROVIDEDTOTHESPEECHRECOGNITIONENGINEISO/IEC2017ALLRIGHTSRESERVED3ISO/IEC3012222017ETHETESTSHALLBECONDUCTEDMULTIPLETIMESINDIFFERENTCONDITIONSFORONESAMPLEPERONESUBJECT546RESULTSFROMTHERECOGNITIONRESULTSOFTHETESTS,THEFOLLOWINGEVALUATIONINDEXESCANBEFOUNDWHENTHEEVALUATIONRESULTSAREREPORTED,ITSHOULDINCLUDETHETESTCONDITIONSSUCHASTHENUMBEROFSUBJECTS,THEENVIRONMENT,ETCSENTENCERECOGNITIONRATIOISDETERMINEDBYFORMULA1SENTENCERECOGNITIONRATIONUMBEROFCORRECTLYRECOGNIZEDNOBREAKSPACESENTENCESNUMBEROFALLTESTEDSENTENCES100NOBREAKSPACE1WORDRECOGNITIONRATIOISDETERMINEDBYFORMULA2WORDRECOGNITIONRATIONUMBEROFCORRECTLYRECOGNIZEDWORNOBREAKSPACEDDSNUMBEROFALLTESTEDWORDS100NOBREAKSPACE2WORDACCURACYISDETERMINEDBYFORMULA3WORDACCURACYNUMBEROFCORRECTLYRECOGNIZEDWORDSNUMBNOBREAKSPACEEEROFINSERTEDERRORWORDSNUMBEROFALLTESTEDWWORDS100NOBREAKSPACE3WHERETHE“INSERTEDERRORWORDS”ARETHERECOGNIZEDWORDSTHOUGHTHEYWERENOTINTHETESTSAMPLES4ISO/IEC2017ALLRIGHTSRESERVEDISO/IEC3012222017EBIBLIOGRAPHY1ISO51272001,INFORMATIONANDDOCUMENTATIONVOCABULARY2ISO825332012,ACOUSTICSAUDIOMETRICTESTMETHODSPART3SPEECHAUDIOMETRY3ISO924114,ERGONOMICREQUIREMENTSFOROFFICEWORKWITHVISUALDISPLAYTERMINALSVDTSPART14MENUDIALOGUES4ISO924115,ERGONOMICREQUIREMENTSF
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