一个音乐检索系统的研究与实现

203Vol.20No.320079JOURNALOFNINGBOUNIVERSITY(NSEE)Sept.2007:1001-5132200703-0293-04315211.2.TP309AGoogleYahoo(Text-based)..[1,2].[3].2......[4-6][e-mail]29420071.....UDR33....2..33.1...3.2.WAV.3.3.2.1(1)...4000Hz.(2)...20msiX211/NiiN=⋅∑x.503060ms.3295.100ms55.(3)..3.2.2..3.2.3.4UDDDRRDDRDD.UD1DD4RR1DRRD2.UDUDR0.1DDDDR0.41.1RUDRDDRRRRDRRRD0.10.40.10.20.2RUURURRDURRU0000UUUDRRRRR⋅⋅⋅T⋅⋅⋅TT1.(1).UUUDRR22UUUUUDUDRRRR()()(DRTRTRT=−+−+⋅⋅⋅+−2)(1)..22.2.252..(1)2..(2)..23.21234567YYYYYYY121111131234567YYYYYYY63665742962007(4)3...(1).(2),...[1],.[J].,2006(11):1915-1918,1922.(3).[2],.[J].,2006(16):3003-3006.[3]JonathanFoote.Anoverviewofaudioinformationretrieval[J].MultimediaSystems,1999,7(11):2-10.[4]GuojunLu.Indexingandretrievalofaudio:asurvey[J].MultimediaToolsandApplications,2001,15(11):269-290.[5]LieWennung,SuChenkang.Content-basedretrievalofmp3songsbasedonquerybysinging[C].InternationalConferenceonAcoustics,Speech,andSignalProcessing(ICASSP),2004:929-933.[6]DonaldByrd,TimCrawford.Problemsofmusicinforma-tionretrievalintherealworld[J].InformationProcessingandManagement,2002,38(11):249-272.32ImplementationofaMusicRetrievalSystemXUJi,YUANXu-hai,WANGRang-ding(CKCSoftwareLab,NingboUniversity,Ningbo315211,China)Abstract:Throughanalyzingthemelodyandexpression,amusicretrievalsystemisproposedandimplementedbasedontheselectedmelodyfeatures.Thesystemsupportstwokindsofenquirysimultaneously,i.e.,manualinputandsinginginput.Theproposedsystemhashighrecognitionrateandispraticalforsmall-scaledatabaseapplications.Keywords:musicretrieval;pitchsequence;matchretrieval;notesyncopateCLCnumber:TP309Documentcode:A