數(shù)字音頻水印同步攻擊問題研究.pdf

1、黑龍江大學(xué)碩士學(xué)位論文數(shù)字音頻水印同步攻擊問題研究姓名：劉九媞申請學(xué)位級別：碩士專業(yè)：計算數(shù)學(xué)指導(dǎo)教師：馮濤20080510黑龍江大學(xué)碩士學(xué)位論文AbstractThedi舀talmediah勰become趾importantinfo珊ationresourcealong而ththerapiddevelopmentofdi百taltechnolo時andcomputernetwDrksConsequentlyaseriesofissue

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3、ds，di舀talwatermarkingisanewte吐mologyofcopyrightprotection卸dauthenticationresources蠲weU鵠integrityundertheenvironmentofopennetworksInrecentyears，greatemphasishausbeenattachedandith鷦becomeahottopiciIlthe丘eldofnmltimediasigI

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5、udiowatermarkingarelistedThen，b弱edonsynchroIlicproblem擁帕audiowate珊arkiⅡgalgorithmsa鵬presentSynchronicdi百talaumowatermarl【ingalgorithmba8edonmeanquantizationInthisalgorithm，theaudjosignalisdecomposedusingwayeletbasisL(1w仃

6、eqUencycoe伍cientsareselectedtoembedsynchronicsignal卸dwatermarkusiⅡgmeaIlquantizationmethodThewatermarkcanbee妣racted麗thouttheori百nalaudiosignalThealgorithmisrobllsttomanyoperation8ondigitalaudiosignal，suchausnoiseaddition

7、，lossycompre鼯ionSynchronizationalgorithmfordualchannelaudiowate咖arkbasedonSVDfea廣tureextractionAccordingtosignalsofdualchanⅡelaudiohavestrongsimilarity’this“gorithmusethemethodofSVDfbatureeXtrauctionto6xonthew砒e皿arksynch

8、roniclocationThen，thewaterIIlarkingw弱embeddedintoExperimental降sultsshowthatthea190rithm’srobustperformanceforsynchronicattacl【shadbeenimprovedhighly1(eywDrds：robust；synchronicsignal；meanquantization；dualchannelaudio：SVD一