英语声学和语音学英文版.ppt

SpeechacousticsandphoneticsLouisC.W.PolsInstituteofPhoneticSciences(IFA)AmsterdamCenterforLanguageandCommunication(ACLC)NATO-ASI“DynamicsofSpeechProductionandPerception”IlCiocco,Tuscany,Italy,July1,2002

OverviewJuly1st,2002Speechacousticsandphonetics,IlCiocco2Dynamicsinspeechacoustics1Contourmodeling(mainlyformants)2Aspectsofspectralundershoot3ModelingVandCreduction4Phoneticknowledgefromspeechcorpora5IFA,CGN,TIMIT,foundspeech6Conclusions7

July1st,2002Speechacousticsandphonetics,IlCiocco4DynamicsinspeechacousticsDynamicsisthenorm,notstationarityarticulatoryefficiencyDynamicsiseverywheregenerallynowordboundariesinspeechdeletionofwords,syllables,phonemes;insertionwithin/betweenwordcoarticulation/assimilationvowelandconsonantreductionAcousticmanifestationssegmentduration,F0,loudness,spectralquality

Dynamicsisthenormcommunicativeefficiencydospectraltransitionsfacilitateorhamperperception?—seeotherpresentationThespeakerspeaksassloppilyasthelistenersallowhimtodoincommunicationArticulatoryvs.perceptualefficiencySpeakerflexibility;speakingstyle(clearvs.sloppy);speakingrate

DynamicsiseverywhereDeletion‘breadandbutter’/brEmbY3/‘Amsterdam’(Du)/Amst@rdAm/—/Ams@dAm/‘koninklijke’(Du)/konI?kl@k@/—/kol@k@/Insertionhomorganicglideinsertion:‘dieeen’(Du)/dij@n/Degemination‘iszichtbaar’(Du)/IszIxtbar/—/IsIxbar/Reduction,coarticulation,assimilation

July1st,2002Speechacousticsandphonetics,IlCiocco7Acousticmanifestationspitch,loudness,formant,componentcontourscontourstylization(e.g.,pitchinpraat)contourmodelingn-thdegreecurvefitting (D.vanBergem)Legendrepolynomials ) (R.vanSon)16pointspersegment )(phoneme)segmentationbyhand(timeconsuming;non-consistent)automatically(viaforcedphonemerecognitionandapronunciationlexiconwithalternatives;systematicerrors)

ContourmodelingJuly1st,20