室內環(huán)境下的雙耳聲源定位系統(tǒng)的研究與實現.pdf

1、東南大學碩士學位論文室內環(huán)境下的雙耳聲源定位系統(tǒng)的研究與實現姓名：張峰申請學位級別：碩士專業(yè)：信號與信息處理指導教師：吳鎮(zhèn)揚20100301一一——————————————————————————————苧生旦豎苧苧———————————————————————，——————一AbstractLanguagecommunicationplaysavitalroleindailylife，andauditorysenseisofgreat

2、importanceinlanguagecommunicationPeoplewithnormalhearingcapabilitiesareabletocommunicateintheadverseenvironment，whilethosewithimpairedhearingfunctionwillfacedifficultiesincommunicationHencecontinuousresearcheffortshavebe

3、enmadeintoauditorysenses，inthehopeofhelpinghearingimpairedpeopleBinauralsourcelocalizationisoneofthekeytechnologies，iethestudyonthemechanismofhowpeopleidentifysourceIocationCurrentlybinauralsourcelocalizationhasbeenwidel

4、ystudiedandappliedItaRemptstosimulatehumanauditorysystemwithitsapplicationnotonlyinhearingaids，butalsoinfieldssuchasauditorysceneanalysis，automaticspeechrecognitionsystem，biomorphicrobotics，augmentedrealityaudioandsource

5、separationandmotiontrackingFirst，thethesisstudiestheprincipleofbinauralsourcelocalizationindetails，anddiscussesthelocalizationcueandHeadRelatedTransferFunction(HRTF)datalookupLocalizationcueincludesInterauralTimeDifferen

6、ce(ITD)，InterauralIntensityDifference(1iD)andspectralinformationThepaperutilizesITDtolocatesourceHRTFdatabasefromMITlabisselectedtoasreferenceazimuthITD，andITDestimateiscalculatedbasedonbinauralsignalFinallysourcelocatio

7、nisidentifiedthroughcrossmatchingThen，generalizedcrosscorrelationITDestimatealgorithmandkeyfactorsinfluencingaIgorithmperformancearediscussedfullyAlso，improvedcrosscorrelationalgorithmbasedonlowpassfilteringisproposedand

8、validatedwithsimulationToimprovethesystemrobustnessintheindoorreverberantenvironment，theroomimpulseresponseisfullyanalyzedandadereverberationalgorithmbasedonlowpassfilteringofcomplexcepstrumminimumphasecomponentisapplied

9、，whichhavebeentestifiedbyexperimentsFinallyacompleteexperimentaltestisconductedonthebinauralsourcelocalizationsysteminbothanechoicroomandordinaryroomwithvarioussources，egwhitenoise，musicandaudiosignalsSimulationresultssh