数字音频产品中基于人耳听觉感知特性的水印嵌入系统设计

265()Vol.26No.5200610JournalofNanjingUniversityofPostsandTelecommunications(NaturalScience)Oct.2006:167325439(2006)0520056209,,,210003:(),,,,,,,180,(DCT),,,,,,:;;;;;:TN912.3;TN915.08:ADesignofWatermarkEmbeddingSystemforDigitalAudioProductsBasedonHASGAOYin2qiu,DENGZong2yuan,YANGZhenInstituteofSignalandInformationProcessing,NanjingUniversityofPostsandTelecommunications,Nanjing210003,ChinaAbstract:Basedonthenewtheoryofinformationhiding,thispaperproposesanovelapproachforembeddingtheIDsofthebuyersintodigitalaudioproducts,especiallytherecordsofspeechesandsongsisrealizedinthispa2per.Andasoftwareisdesignedtocarryouttheapproachautomatically.Whenweaddwatermarksintothespeechrecords,thepolarityofsomesyllablesorwordsisinvertedaccordingtotheusers’IDs,whichismainlybasedonthetheorythatthehumanauditorysystemcannotdistinguishspeechsignalswithpositiveandnegativepolarity.TodealwithsongsweadoptamethodofinsertingwatermarksbyquantizingthecoefficientsofitsDCT.Wehavealsomadesomehearingexperimentsinananechoicchamber,andtheexperimentsshowthatallproductsarenotaffectedafterembeddinginformationoftheusers.Moreove,theembeddedinformationcannotbeextractedwithoutusingsomespecialmeasures.Someanti2jammingexperimentssuchasaddingsomenoises,codinganddecodingandsoonhavebeendonetovalidatethatourmethodsareuniversal.Basedontheexperimentresults,weconfirmthattheapproa2chesinthispaperhavebetterperformancesintermsofrobustness,securityandinvisibility.Keywords:Informationhiding;Digitalwatermarking;Robustness;Invisibility;Endpointdetection;Linearprediction:2006201209;:2006203206:(BK2004150)1,(),©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(digitalwatermarking),,(watermark),,(),,[1-2],,,,,22.1,,(),,,,,;,,,[3],,,,,[4]2.2:,,DCT[5],33.1,,,,,;,,,,,;,,,1:13.2(1),,,,,:,;(),;(),;,,,755:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2),3.3,4,LPC,,,,,,,,,,,,,,,,,,0,34,34,:,,;,0,,,,,,LPC,,,LSB[1,2,6-8],,,,3.43.4.1,,,,:(1),20ms,10ms,;(2);(3),,,;(4),;(5)4,,,85()2006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()(5),,,53.4.2,,2,,(),(),2,,,,,,,,,(),,(),3.4.3(1)CSL(ComputerSpeechLab)8k,16k,44100kVC3050dB8kHzLPC,20ms,160,0,67,,,7,67,,,,,,,,(2),,,,8,,83.5,01,1180,0,955:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(1),;(2)12,0,1,10(10),3.53.7(1),,,,9,9,,,,,,70%70%,,,,,,,,,10,,70%,,70%(2)70%,,70%:,,,,,16kHz(14.650s):17,1,,70%1123456789101112131415161755302616322048167722108202111072152912851581523066281034174(%)3529242432292411282175202932241921,06()2006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,),610,108,:(1);(2),,616,,100%,DVI/IMAADPCM,(),,,44.1,,,;(),,,,,,,,,():(1)(),,;(2),1.5,;(3),,;(4),;(5),,,,:(),4.2,,1,,,4.3,,,165:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[5]5.2f,w(01),,ff1111:(1)11AB(2),;,,A1,B0(3)fm,r,m=fmod(1)r=f-m(2)(4)fw:w=1,ffA:w=0,ffB5.312,:12(1)01,V={v(i),0in,v(i){0,1}}(n)(3)(2):,s=se+sr,,se,,sr,(3)k(L)se(k)De=DCT(se)={De(k)=DCT(se(k))}(4),De(k)={de(k)(i),0iL},de(k)(i)kse(k)De(k)i(4)DCT5.2,DCTDCTkse(k)DCTde(k)(t)VmV(m),de(k)(t),DCT:(1),;,,;(2)Se(k)L,26()2006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(k)LDCT,0DCTde(k)(0),L-1DCT(de(k)(1)),:,,;,,,(),,,,(5),se=IDCT(De)={IDCT(De(k))}(5)sese,:s=se+sr5.4ss,:(1),;(2)();(3)DCT11,Vs,DCTdse(k)(t),Vs(k)=1,dse(k)(t)A0,dse(k)(t)B(6)Vs,,DCT,,5.5,,16bit/sample,44.1kHz,3.183s(140370)(),28,,500001,5,5DCT,=0.05,DCTDe(k)(2)13,14,,,1314,96.96%.,,0.1,98.70%,()DCTDe(k)(3),,,01,0101015,00000111110000011111,,5,01,00011/01111/01000/,0106,,,365:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(1),;(2),;(3),,,:(1),1020s,10,,,,,,(2)10-20S,,,,(3)wav,mp3wma,wav:[1].[M].:,2004.[2]KATZENBEISSERS,PETITCOLASFAP.[M].,,,.:,2001.[3],.[M].:,1995.[4]SAKAGUCHIS,ARAIT,MURAHARAY.TheEffectofPolarityInversionofSpeechonHumanPerceptionandDataHidingasanApplication[C]//ProcofInternationalConfonAcoustics,Speech,andSignalProcessing(IEEE).2000.[5].[D].:,2004.[6],.[M].:,2002.[7],,.[J].,2002,3(4):99-104.[8].[D].:,2003.[9]PETITCOLASFA,ANDERSONR,KUHNMG.InformationHid2ing2ASurvey[J].ProceedingsoftheIEEE,specialissueonprotec2tionofmultimediacontent,1989,87(7):1062-1078.[10]CHOUJ,RAMCHANDRANK.AudioDataHidingwithApplica2tiontoSurroundSound[C]//ICASSP.2003:337-340.:(1982-),,(26)(1983-),,(26)(1961-),,,,(26)46()2006©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.