频闪喉镜的应用(2).ppt

《频闪喉镜的应用(2).ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、LxPrecisionStroboscopyLxStrobe3DigitalPrecisionStroboscopyTheuseofstroboscopyinthevoiceclinichasbeenassociatedwithanimprovedknowledgeofthedynamicsofvoiceproductionandhashaddirectpaybacktopatientsinthedevelopmentofmicrosurgicaltechniquescapableofpreservingorreconstru

2、ctingtheessentialfeaturesofthedelicatevibratingstructureswhichareresponsibleforthegenerationofgoodvoice.TheLxPrecisionStroboscopyprogram(LxStrobe3)isanenhancedversionoftheLxDigitalVideocaptureprogramwhichintelligentlycontrolstheLxLightSourceandprovidestheextraprecisi

3、onandadditionalbenefitsofastateoftheartsoftwarecontrolledstroboscopysystem.LxPrecisionStroboscopyhasbeenoptimizedforobtainingstroboscopicsequencesforeventhemostdifficultsubjectswithfastcapturing,reviewingandanimatingoptions.Precisionsynchronywithtriggeringwaveformspe

4、rmitsgreatersecurityintheinterpretationoftheimages.BenefitsAutomaticswitchfromcontinuoustoslowmotionstroboscopicviewwhenphonationstartsNochangeincolourbalancebetweencontinuousandstroboscopiclight.FootswitchcontrolofvideoacquisitionFastcaptureoptionofimagesequencesrep

5、resentingonevocalfoldcycle(within300ms)FootswitchtomarkpointsofinterestInstantaneousreviewofmarkedsectionsOptionalsaveofmarkedsectionsonlyRapidanimationofsimulatedvocalfoldcyclesCrosscorrelationofStroboscopicandLx(EGG)andspeechprocessingtechniquesandmeasures.SpeechSt

6、udio,aconnectedspeechanalysisandoutcomemeasurementsystem,canbeaddedasasoftwareoption.FeaturesTriggeringfromSpeechorLaryngograph®signals.Instantaneoustrackingoffundamentalfrequencyand,periodbyperiod(unsmoothed)calculationoftriggeringpointunderDSPcontrol.Singleflashper

7、videofieldavoidsblurringduetomultipleexposures.(50or60Hz)SynchronymarkerslinkingimageandLxorSpeechcycleandphase.Thecompleteacousticwaveformfortheentirecapturedsequencecanbeviewedwiththepreciseperiodandphaseatwhichthecorrespondingimagesweretaken.Thispermitscriticaleva

8、luationofthevalidityofthestroboscopicsequencesandgivesacontextfortheinterpretationofimagessequences,evenwherevibrationisirregularan