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1、TutorialSoundProductionandModelingPerryR.CookPrincetonUniversityoundinmultimedia,movies,games,vir-dentinwaterwaves,whichdisplacethesurfaceoftheStualreality,andhuman–computerinter-waterupanddown,yettravelperpendiculartothedis-facesisagrowing?eldthatencompassesthedisc
2、iplinesturbancemotion.Figure1showsatransversewaveinofanaloganddigitalsignalprocessing,physics,speech,thewavetravelingonastring.Thetransversewavemusic,perception,andcomputersystemsarchitecture.alsooccursinmanyothersolidssuchasmembranesThisoverviewofsoundproductionand
3、modelingtech-andplates.Othertypesofpropagatingsoundwavesniquessurveysthestateoftheartinsoundtechnology.arelongitudinal,inwhichthedisturbanceisintheSoundhasbecomeacriticalcomponentinmodernsamedirectionasthepropagation.Thishappensinair,multimediasystems,especiallymult
4、ispeakersurround-asFigure2shows.soundentertainmentsystems.ManyWavespropagateinphysicalobjects,butthevibra-ofthecomponentsandtechniquestioncansometimesappearmuchdifferentlytoThistutorialgivesabriefinthesesystemsarealsoapplicableobservers.Forexample,ifweliftupastringu
5、nderten-invirtualandaugmentedrealitysys-sionatthecenterandreleaseit,itappearsto?opupandoverviewofsound,tems.Withbasicsoundhardwaredown,ratherthantheappearanceofwavestravelingnowavailableformost(butnotall,downandbackalongthestring.Similarly,ifwestrikeadescribingsound
6、asaasinsomepalmtops)computersys-drumheadinthecenter,itappearsto?opupanddowntems,andincreasingprocessor(likethestring,butin2D).Ifweweretopickupastringphysicalphenomenon,speedsallowingdirectreal-timeneartheend,andifwecouldobservethevibrationinsoundmanipulation,enhanci
7、ngslowmotion,wemightseethedisturbancetravelingcomputerrepresentationsofmultimodalcomputer–humaninter-downthestringandback.Itturnsoutthatwecanfacesbyusingthesonicchannelisdecomposeanyoscillationofapluckedstringintotwosound,andperceptionofbecomingcommonplace.Soundinco
8、mponents—onegoingleftandtheotherrightonthegamesandothergraphics-intensivestring—andtheobservedstanding-wavedisplacementsoundbyhumans.real-
