音樂旋律自動抽取與哼唱檢索系統(tǒng)關(guān)鍵技術(shù)研究.pdf

1、蘭州大學(xué)碩士學(xué)位論文音樂旋律自動抽取與哼唱檢索系統(tǒng)關(guān)鍵技術(shù)研究姓名：蔡軍衛(wèi)申請學(xué)位級別：碩士專業(yè)：計算機軟件與理論指導(dǎo)教師：劉莉20080501蘭州大學(xué)碩士研究生畢業(yè)論文AbstractV—WiththeincreasingapplicationsofmultimediadataontheInternetandmultimediadatabases，therearemoreandmoreresearchesonautomaticclas

2、sifyingindexingandretrievingmultimediadataThisisparticularlytrueformusicfiles，sincemuchmoreonlinemusicstoringandsearchingapplicationsareavailableandtheyneedanefficientmechanismtoorganizethesemassivedataTextbasedretrieval

3、isonlyeffectiveformusicfilesWithmetadataContentbasedmusicinformationretrievalistoaccessthedesiredmusicfilesbymelodyrhythmtimbreandotherdifficuhtoextractlayersofsignificanceThisthesismainlyfocusesonthekeytechnologiesoncon

4、tentbasedmusicretrieval，mainlyinvolvingmusicalmelodyfeatureextractionmusicalmelodymatchingthestructureofmusicalmelodydatabase，thewholeretrievalsystemconstructingandmanyotherissuesCurrentlyathomeandabroad，researchershavem

5、adegreatprogressesonthesetechnologiesintermsoftheoryanddevelopedmanyrelateapplicationsystemsHowecertherearemanyproblemswithextensiveness，automationandscalabilityintheseexistingsystemsThereforetheresearchworkinthisthesisi

6、srelatedtotheseproblemsThestudiesaremainlyonautomaticconstructionofmusicdatabase，melodyautomaticextractionmethodfrompolyphonicMIDIandsystem’SimplementationforMIDIFirst，throughmodifyinganopensourcecrawler(Larbin)，Irealize

7、anofflinesystemtoautomaticallyconstructthemusicdatabaseItenhancesthewholesystem’SautomationandthescalabilityofthemusicdatabaseSecond，thethesisexploresthetheoryofmelodysimilarityanddesignsanewrepresentationmethodformelody

8、IproposeandrealizeanalgorithmforextractingthemelodyfrompolyphonicMIDIbasedonthemelodysimilaritycomputationExperimentresultsshowthattherecallandprecisionarebetterandprovetheeffectivenessofthealgorithmFinallythethesisconst