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1、AdaptiveBoostingforAutomaticSpeechRecognitionbyKhamNguyenSubmittedtotheElectricalandComputerEngineeringDepartment,NortheasternUniversityinpartialfulfillmentoftherequirementsforthedegreeofDoctorOfPhilosophy(PhD)attheNORTHEASTERNUNIVERSITYOctober2015○cNortheasternUni
2、versity2015.Allrightsreserved.ProQuestNumber:3741513AllrightsreservedINFORMATIONTOALLUSERSThequalityofthisreproductionisdependentuponthequalityofthecopysubmitted.Intheunlikelyeventthattheauthordidnotsendacompletemanuscriptandtherearemissingpages,thesewillbenoted.Al
3、so,ifmaterialhadtoberemoved,anotewillindicatethedeletion.ProQuest3741513PublishedbyProQuestLLC(2015).CopyrightoftheDissertationisheldbytheAuthor.Allrightsreserved.ThisworkisprotectedagainstunauthorizedcopyingunderTitle17,UnitedStatesCodeMicroformEdition?ProQuestLLC
4、.ProQuestLLC.789EastEisenhowerParkwayP.O.Box1346AnnArbor,MI48106-13462ApprovedforDissertationRequirementsoftheDoctorofPhilosophyDegreeDr.GileadTadmor....................................................DissertationAdvisorProfessorofElectricalandComputerEngineeringDr
5、.JohnMakhoul.....................................................DissertationSecondaryAdvisorChiefScientistatRaytheonBBNTechnologiesDr.JenniferDy........................................................Member,ThesisCommitteeProfessorofElectricalandComputerEngineerin
6、gSpyrosMatsoukas......................................................Member,ThesisCommitteePrincipleScientistatAmazon.comDr.SheilaHemami....................................................DepartmentChairProfessorofElectricalandComputerEngineeringDr.SaraWadia-Fasce
7、tti...............................................AssociateDeanofGraduateSchoolProfessoratSchoolofEngineering4AbstractTheatomicunitsofmostautomaticspeechrecognition(ASR)systemsarethephonemes.However,themostwidelyusedfeaturesinASRareperceptuallinearprediction(PLP)an
8、dmel-frequencycepstralcoefficients(MFCC),whichdonotcarrythephonemein-formationexplicitly.Thediscriminativefeatureswithphonemeinformationhavebeens
